Check DNS, Urls + Redirects, Certificates and Content of your Website

Host	Type	IP-Address	is auth.	∑ Queries	∑ Timeout
ledermann.dev	A	116.203.125.190 Nuremberg/Bavaria/Germany (DE) - Hetzner Online GmbH Hostname: ledermann.dev	yes	1	0
	AAAA	2a01:4f8:c2c:2088::1 Nuremberg/Bavaria/Germany (DE) - Hetzner Online GmbH	yes
www.ledermann.dev	A	116.203.125.190 Nuremberg/Bavaria/Germany (DE) - Hetzner Online GmbH Hostname: ledermann.dev	yes	1	0
	AAAA	2a01:4f8:c2c:2088::1 Nuremberg/Bavaria/Germany (DE) - Hetzner Online GmbH	yes
*.ledermann.dev	A	116.203.125.190	yes
	AAAA	2a01:4f8:c2c:2088::1	yes
	CNAME		yes

2. DNSSEC

Zone (*)	DNSSEC - Informations

Zone: (root)
(root)	1 DS RR published


	DS with Algorithm 8, KeyTag 20326, DigestType 2 and Digest 4G1EuAuPHTmpXAsNfGXQhFjogECbvGg0VxBCN8f47I0=


	• Status: Valid because published


	4 DNSKEY RR found


	Public Key with Algorithm 8, KeyTag 20326, Flags 257 (SEP = Secure Entry Point)


	Public Key with Algorithm 8, KeyTag 38696, Flags 257 (SEP = Secure Entry Point)


	Public Key with Algorithm 8, KeyTag 54393, Flags 256


	Public Key with Algorithm 8, KeyTag 57780, Flags 256


	1 RRSIG RR to validate DNSKEY RR found


	RRSIG-Owner (root), Algorithm: 8, 0 Labels, original TTL: 172800 sec, Signature-expiration: 22.07.2026, 00:00:00 +, Signature-Inception: 01.07.2026, 00:00:00 +, KeyTag 20326, Signer-Name: (root)


	• Status: Good - Algorithmus 8 and DNSKEY with KeyTag 20326 used to validate the DNSKEY RRSet


	• Status: Valid Chain of trust. Parent-DS with Algorithm 8, KeyTag 20326, DigestType 2 and Digest "4G1EuAuPHTmpXAsNfGXQhFjogECbvGg0VxBCN8f47I0=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone

Zone: dev
dev	1 DS RR in the parent zone found


	DS with Algorithm 8, KeyTag 60074, DigestType 2 and Digest uULizlrr9i/KWdBXB+bbt5UhHVQNitugLp6J6DNCR4U=


	1 RRSIG RR to validate DS RR found


	RRSIG-Owner dev., Algorithm: 8, 1 Labels, original TTL: 86400 sec, Signature-expiration: 23.07.2026, 17:00:00 +, Signature-Inception: 10.07.2026, 16:00:00 +, KeyTag 57780, Signer-Name: (root)


	• Status: Good - Algorithmus 8 and DNSKEY with KeyTag 57780 used to validate the DS RRSet in the parent zone


	2 DNSKEY RR found


	Public Key with Algorithm 8, KeyTag 17910, Flags 256


	Public Key with Algorithm 8, KeyTag 60074, Flags 257 (SEP = Secure Entry Point)


	1 RRSIG RR to validate DNSKEY RR found


	RRSIG-Owner dev., Algorithm: 8, 1 Labels, original TTL: 300 sec, Signature-expiration: 31.07.2026, 05:30:21 +, Signature-Inception: 09.07.2026, 05:30:21 +, KeyTag 60074, Signer-Name: dev


	• Status: Good - Algorithmus 8 and DNSKEY with KeyTag 60074 used to validate the DNSKEY RRSet


	• Status: Valid Chain of trust. Parent-DS with Algorithm 8, KeyTag 60074, DigestType 2 and Digest "uULizlrr9i/KWdBXB+bbt5UhHVQNitugLp6J6DNCR4U=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone

Zone: ledermann.dev
ledermann.dev	1 DS RR in the parent zone found


	DS with Algorithm 13, KeyTag 20081, DigestType 2 and Digest SS1yGX7VYGDPAUL9S8CAaAxouobHpOAOpMjYVQ5jNRI=


	1 RRSIG RR to validate DS RR found


	RRSIG-Owner ledermann.dev., Algorithm: 8, 2 Labels, original TTL: 1800 sec, Signature-expiration: 31.07.2026, 05:30:21 +, Signature-Inception: 09.07.2026, 05:30:21 +, KeyTag 17910, Signer-Name: dev


	• Status: Good - Algorithmus 8 and DNSKEY with KeyTag 17910 used to validate the DS RRSet in the parent zone


	1 DNSKEY RR found


	Public Key with Algorithm 13, KeyTag 20081, Flags 256


	1 RRSIG RR to validate DNSKEY RR found


	RRSIG-Owner ledermann.dev., Algorithm: 13, 2 Labels, original TTL: 10800 sec, Signature-expiration: 23.07.2026, 00:00:00 +, Signature-Inception: 02.07.2026, 00:00:00 +, KeyTag 20081, Signer-Name: ledermann.dev


	• Status: Good - Algorithmus 13 and DNSKEY with KeyTag 20081 used to validate the DNSKEY RRSet


	• Status: Valid Chain of trust. Parent-DS with Algorithm 13, KeyTag 20081, DigestType 2 and Digest "SS1yGX7VYGDPAUL9S8CAaAxouobHpOAOpMjYVQ5jNRI=" validates local Key with the same values


	RRSIG Type 1 validates the A - Result: 116.203.125.190 Validated: RRSIG-Owner ledermann.dev., Algorithm: 13, 2 Labels, original TTL: 1800 sec, Signature-expiration: 23.07.2026, 00:00:00 +, Signature-Inception: 02.07.2026, 00:00:00 +, KeyTag 20081, Signer-Name: ledermann.dev


	RRSIG Type 16 validates the TXT - Result: v=spf1 include:_mailcust.gandi.net ?all brevo-code:37d9b1c8901bd46bee2f3f10b29ed9e3 google-site-verification=vN-zWPC5_zEJn-WX_9OxfpmxGjKT9w-ALtYwCI8sIaI Validated: RRSIG-Owner ledermann.dev., Algorithm: 13, 2 Labels, original TTL: 10800 sec, Signature-expiration: 23.07.2026, 00:00:00 +, Signature-Inception: 02.07.2026, 00:00:00 +, KeyTag 20081, Signer-Name: ledermann.dev


	RRSIG Type 28 validates the AAAA - Result: 2A01:04F8:0C2C:2088:0000:0000:0000:0001 Validated: RRSIG-Owner ledermann.dev., Algorithm: 13, 2 Labels, original TTL: 1800 sec, Signature-expiration: 23.07.2026, 00:00:00 +, Signature-Inception: 02.07.2026, 00:00:00 +, KeyTag 20081, Signer-Name: ledermann.dev


	RRSIG Type 257 validates the CAA - Result: 5\|issueletsencrypt.org 9\|issuewildletsencrypt.org Validated: RRSIG-Owner ledermann.dev., Algorithm: 13, 2 Labels, original TTL: 10800 sec, Signature-expiration: 23.07.2026, 00:00:00 +, Signature-Inception: 02.07.2026, 00:00:00 +, KeyTag 20081, Signer-Name: ledermann.dev


	CNAME-Query sends a valid NSEC3 RR as result with the hashed query name "7var2h56vaesntjtdndor3e37s65meco" equal the hashed NSEC3-owner "7var2h56vaesntjtdndor3e37s65meco" and the hashed NextOwner "7var2h56vaesntjtdndor3e37s65mecp". So the zone confirmes the not-existence of that CNAME RR, but the existence of that query name (minimal one RR with that name exists). Bitmap: A, NS, SOA, MX, TXT, AAAA, RRSIG, DNSKEY, NSEC3PARAM, CDS, CAA Validated: RRSIG-Owner 7var2h56vaesntjtdndor3e37s65meco.ledermann.dev., Algorithm: 13, 3 Labels, original TTL: 10800 sec, Signature-expiration: 23.07.2026, 00:00:00 +, Signature-Inception: 02.07.2026, 00:00:00 +, KeyTag 20081, Signer-Name: ledermann.dev


	Status: Good. NoData-Proof required and found.


	TLSA-Query (_443._tcp.ledermann.dev) sends a valid NSEC3 RR as result with the hashed owner name "7var2h56vaesntjtdndor3e37s65meco" (unhashed: ledermann.dev). So that's the Closest Encloser of the query name. Bitmap: A, NS, SOA, MX, TXT, AAAA, RRSIG, DNSKEY, NSEC3PARAM, CDS, CAA Validated: RRSIG-Owner 7var2h56vaesntjtdndor3e37s65meco.ledermann.dev., Algorithm: 13, 3 Labels, original TTL: 10800 sec, Signature-expiration: 23.07.2026, 00:00:00 +, Signature-Inception: 02.07.2026, 00:00:00 +, KeyTag 20081, Signer-Name: ledermann.dev


	Status: Good. NoData-Proof required and found.


	TLSA-Query sends a valid NSEC3 RR as result and covers the hashed Next Closer Name "s4e4jlvdpls5frsfrbjkkvqu0jrmr72f" (unhashed: _tcp.ledermann.dev) with the owner "s4e4jlvdpls5frsfrbjkkvqu0jrmr72e" and the NextOwner "s4e4jlvdpls5frsfrbjkkvqu0jrmr72g". So that NSEC3 confirms the not-existence of the Next Closer Name. Bitmap: No Bitmap? Validated: RRSIG-Owner s4e4jlvdpls5frsfrbjkkvqu0jrmr72e.ledermann.dev., Algorithm: 13, 3 Labels, original TTL: 10800 sec, Signature-expiration: 23.07.2026, 00:00:00 +, Signature-Inception: 02.07.2026, 00:00:00 +, KeyTag 20081, Signer-Name: ledermann.dev


	Status: Good. NoData-Proof required and found.


	TLSA-Query sends a valid NSEC3 RR as result with the hashed owner name "7vt7f63fuj32c1sj0tlur53nhpeh5fs3" (unhashed: *.ledermann.dev) as the Wildcard-Expansion of the Closest Encloser of the query name "tmjapb3k0qho921u7p4n1j0jn1i7on5u". So the Wildcard-Expansion of the Closest Encloser confirms that the query name is generated via wildcard expansion (NoError instead of NXDomain). Bitmap: A, AAAA, RRSIG Validated: RRSIG-Owner 7vt7f63fuj32c1sj0tlur53nhpeh5fs3.ledermann.dev., Algorithm: 13, 3 Labels, original TTL: 10800 sec, Signature-expiration: 23.07.2026, 00:00:00 +, Signature-Inception: 02.07.2026, 00:00:00 +, KeyTag 20081, Signer-Name: ledermann.dev


	Status: Good. NoData-Proof required and found.

Zone: www.ledermann.dev
www.ledermann.dev	0 DS RR in the parent zone found


	DS-Query in the parent zone has a valid NSEC3 RR as result with the hashed query name "nqall9mgo49vhbtdq7qt376eomcqhpg3" between the hashed NSEC3-owner "nqall9mgo49vhbtdq7qt376eomcqhpg3" and the hashed NextOwner "nqall9mgo49vhbtdq7qt376eomcqhpg4". So the parent zone confirmes the not-existence of a DS RR. Bitmap: A, AAAA, RRSIG, CAA Validated: RRSIG-Owner nqall9mgo49vhbtdq7qt376eomcqhpg3.ledermann.dev., Algorithm: 13, 3 Labels, original TTL: 10800 sec, Signature-expiration: 23.07.2026, 00:00:00 +, Signature-Inception: 02.07.2026, 00:00:00 +, KeyTag 20081, Signer-Name: ledermann.dev


	RRSIG Type 1 validates the A - Result: 116.203.125.190 Validated: RRSIG-Owner www.ledermann.dev., Algorithm: 13, 3 Labels, original TTL: 1800 sec, Signature-expiration: 23.07.2026, 00:00:00 +, Signature-Inception: 02.07.2026, 00:00:00 +, KeyTag 20081, Signer-Name: ledermann.dev


	RRSIG Type 28 validates the AAAA - Result: 2A01:04F8:0C2C:2088:0000:0000:0000:0001 Validated: RRSIG-Owner www.ledermann.dev., Algorithm: 13, 3 Labels, original TTL: 1800 sec, Signature-expiration: 23.07.2026, 00:00:00 +, Signature-Inception: 02.07.2026, 00:00:00 +, KeyTag 20081, Signer-Name: ledermann.dev


	RRSIG Type 257 validates the CAA - Result: 5\|issueletsencrypt.org Validated: RRSIG-Owner www.ledermann.dev., Algorithm: 13, 3 Labels, original TTL: 10800 sec, Signature-expiration: 23.07.2026, 00:00:00 +, Signature-Inception: 02.07.2026, 00:00:00 +, KeyTag 20081, Signer-Name: ledermann.dev


	CNAME-Query sends a valid NSEC3 RR as result with the hashed query name "nqall9mgo49vhbtdq7qt376eomcqhpg3" equal the hashed NSEC3-owner "nqall9mgo49vhbtdq7qt376eomcqhpg3" and the hashed NextOwner "nqall9mgo49vhbtdq7qt376eomcqhpg4". So the zone confirmes the not-existence of that CNAME RR, but the existence of that query name (minimal one RR with that name exists). Bitmap: A, AAAA, RRSIG, CAA Validated: RRSIG-Owner nqall9mgo49vhbtdq7qt376eomcqhpg3.ledermann.dev., Algorithm: 13, 3 Labels, original TTL: 10800 sec, Signature-expiration: 23.07.2026, 00:00:00 +, Signature-Inception: 02.07.2026, 00:00:00 +, KeyTag 20081, Signer-Name: ledermann.dev


	Status: Good. NoData-Proof required and found.


	TXT-Query sends a valid NSEC3 RR as result with the hashed query name "nqall9mgo49vhbtdq7qt376eomcqhpg3" equal the hashed NSEC3-owner "nqall9mgo49vhbtdq7qt376eomcqhpg3" and the hashed NextOwner "nqall9mgo49vhbtdq7qt376eomcqhpg4". So the zone confirmes the not-existence of that TXT RR, but the existence of that query name (minimal one RR with that name exists). Bitmap: A, AAAA, RRSIG, CAA Validated: RRSIG-Owner nqall9mgo49vhbtdq7qt376eomcqhpg3.ledermann.dev., Algorithm: 13, 3 Labels, original TTL: 10800 sec, Signature-expiration: 23.07.2026, 00:00:00 +, Signature-Inception: 02.07.2026, 00:00:00 +, KeyTag 20081, Signer-Name: ledermann.dev


	Status: Good. NoData-Proof required and found.


	TLSA-Query (_443._tcp.www.ledermann.dev) sends a valid NSEC3 RR as result with the hashed owner name "nqall9mgo49vhbtdq7qt376eomcqhpg3" (unhashed: www.ledermann.dev). So that's the Closest Encloser of the query name. Bitmap: A, AAAA, RRSIG, CAA Validated: RRSIG-Owner nqall9mgo49vhbtdq7qt376eomcqhpg3.ledermann.dev., Algorithm: 13, 3 Labels, original TTL: 10800 sec, Signature-expiration: 23.07.2026, 00:00:00 +, Signature-Inception: 02.07.2026, 00:00:00 +, KeyTag 20081, Signer-Name: ledermann.dev


	Status: Good. NXDomain-Proof required and found.


	TLSA-Query sends a valid NSEC3 RR as result and covers the hashed Next Closer Name "v59inej4q8o630rk4cin91rv0tmq4dck" (unhashed: _tcp.www.ledermann.dev) with the owner "v59inej4q8o630rk4cin91rv0tmq4dcj" and the NextOwner "v59inej4q8o630rk4cin91rv0tmq4dcl". So that NSEC3 confirms the not-existence of the Next Closer Name. Bitmap: No Bitmap? Validated: RRSIG-Owner v59inej4q8o630rk4cin91rv0tmq4dcj.ledermann.dev., Algorithm: 13, 3 Labels, original TTL: 10800 sec, Signature-expiration: 23.07.2026, 00:00:00 +, Signature-Inception: 02.07.2026, 00:00:00 +, KeyTag 20081, Signer-Name: ledermann.dev


	Status: Good. NXDomain-Proof required and found.


	TLSA-Query sends a valid NSEC3 RR as result and covers the hashed Wildcard expansion of the ClosestEncloser "rvu4vncdfr735gs48nhaa2qc01920ltf" (unhashed: *.www.ledermann.dev) with the owner "rvu4vncdfr735gs48nhaa2qc01920lte" and the NextOwner "rvu4vncdfr735gs48nhaa2qc01920ltg". So that NSEC3 confirms the not-existence of the Wildcard expansion. Bitmap: No Bitmap? Validated: RRSIG-Owner rvu4vncdfr735gs48nhaa2qc01920lte.ledermann.dev., Algorithm: 13, 3 Labels, original TTL: 10800 sec, Signature-expiration: 23.07.2026, 00:00:00 +, Signature-Inception: 02.07.2026, 00:00:00 +, KeyTag 20081, Signer-Name: ledermann.dev


	Status: Good. NXDomain-Proof required and found.

3. Name Servers

Domain	Nameserver	NS-IP
www.ledermann.dev	• ns1.gandi.net
ledermann.dev	• ns1.gandi.net / node-frankfurt3	173.246.100.2 Paris/Île-de-France/France (FR) - Gandi US Inc	•
	•	2001:4b98:aaaa::2 Paris/Île-de-France/France (FR) - GANDI is an ICANN accredited registrar	•
	• ns-141-a.gandi.net / node-frankfurt3	173.246.100.142 Paris/Île-de-France/France (FR) - Gandi US Inc	•
	•	2001:4b98:aaaa::8e Paris/Île-de-France/France (FR) - GANDI is an ICANN accredited registrar	•
	• ns-73-b.gandi.net / node-frankfurt3	213.167.230.74 Paris/Île-de-France/France (FR) - Gandi SAS	•
	•	2001:4b98:aaab::4a Paris/Île-de-France/France (FR) - GANDI is an ICANN accredited registrar	•
	• ns-76-c.gandi.net / node-frankfurt3	217.70.187.77 Paris/Île-de-France/France (FR) - Gandi SAS	•
	•	2604:3400:aaac::4d Paris/Île-de-France/France (FR) - Gandi US Inc	•
dev	• ns-tld1.charlestonroadregistry.com / hex:1A 80 3E 7C 55 98 55 25 B5 C4 09 BE A2 03 04 28		•
	• ns-tld2.charlestonroadregistry.com / hex:25 EB 7D 1B 9D 5F E0 0E 14 D4 E4 F2 E7 E9 E3 C2		•
	• ns-tld3.charlestonroadregistry.com / ҉�ƴD��ئF�3X�		•
	• ns-tld4.charlestonroadregistry.com / hex:62 20 78 78 96 07 A7 86 A6 CE 18 69 8A 87 68 DF		•
	• ns-tld5.charlestonroadregistry.com / r#�� y��z		•

4. SOA-Entries

Domain:	dev
Zone-Name:	dev
Primary:	ns-tld1.charlestonroadregistry.com
Mail:	cloud-dns-hostmaster.google.com
Serial:	1
Refresh:	21600
Retry:	3600
Expire:	259200
TTL:	300
num Entries:	5

Domain:	ledermann.dev
Zone-Name:	ledermann.dev
Primary:	ns1.gandi.net
Mail:	hostmaster.gandi.net
Serial:	1783555200
Refresh:	10800
Retry:	3600
Expire:	604800
TTL:	10800
num Entries:	8

Domain:	www.ledermann.dev
Zone-Name:
Primary:
Mail:
Serial:
Refresh:
Retry:
Expire:
TTL:
num Entries:	1

5. Screenshots

Startaddress: https://ledermann.dev/, address used: https://ledermann.dev/, Screenshot created 2026-07-11 05:26:40 +00:0

Mobil (412px x 732px)

827 milliseconds

Screenshot mobile - https://ledermann.dev/

Mobil + Landscape (732px x 412px)

787 milliseconds

Screenshot mobile landscape - https://ledermann.dev/

Screen (1280px x 1680px)

846 milliseconds

Screenshot Desktop - https://ledermann.dev/

Mobile- and other Chrome-Checks

	width	height
visual Viewport	397	732
content Size	413	9105

Fatal: Horizontal scrollbar detected. Content-size width is greater then visual Viewport width.

6. Url-Checks

show header:

Domainname	Http-Status	redirect	Sec.	G
• http://ledermann.dev/ 116.203.125.190	301	https://ledermann.dev/ Html is minified: 100.00 %	0.040	A
Location: https://ledermann.dev/
Date: Sat, 11 Jul 2026 03:23:37 GMT
Content-Length: 17

• http://ledermann.dev/ 2a01:4f8:c2c:2088::1	301	https://ledermann.dev/ Html is minified: 100.00 %	0.036	A
Location: https://ledermann.dev/
Date: Sat, 11 Jul 2026 03:23:37 GMT
Content-Length: 17

• http://www.ledermann.dev/ 116.203.125.190	301	https://www.ledermann.dev/ Html is minified: 100.00 %	0.020	A
Location: https://www.ledermann.dev/
Date: Sat, 11 Jul 2026 03:23:37 GMT
Content-Length: 17

• http://www.ledermann.dev/ 2a01:4f8:c2c:2088::1	301	https://www.ledermann.dev/ Html is minified: 100.00 %	0.020	A
Location: https://www.ledermann.dev/
Date: Sat, 11 Jul 2026 03:23:37 GMT
Content-Length: 17

• https://www.ledermann.dev/ 116.203.125.190	301	https://ledermann.dev/ Html is minified: 109.46 %	2.170	A
Alt-Svc: h3=":443"; ma=2592000
Date: Sat, 11 Jul 2026 03:23:47 GMT
Location: https://ledermann.dev/
Referrer-Policy: same-origin
Server: nginx
Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-XSS-Protection: 1; mode=block
Content-Length: 162
Content-Type: text/html

• https://www.ledermann.dev/ 2a01:4f8:c2c:2088::1	301	https://ledermann.dev/ Html is minified: 109.46 %	2.016	A
Alt-Svc: h3=":443"; ma=2592000
Date: Sat, 11 Jul 2026 03:23:50 GMT
Location: https://ledermann.dev/
Referrer-Policy: same-origin
Server: nginx
Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-XSS-Protection: 1; mode=block
Content-Length: 162
Content-Type: text/html

• https://ledermann.dev/ 116.203.125.190 gzip used - 15574 / 58848 - 73.54 % Inline-JavaScript (∑/total): 1/327 Inline-CSS (∑/total): 7/19000	200	Html is minified: 151.47 % Other inline scripts (∑/total): 1/406	2.240	A
Alt-Svc: h3=":443"; ma=2592000
Cache-Control: max-age=180
Content-Security-Policy: default-src 'none'; font-src 'self' data:; style-src 'self' 'unsafe-inline' 'report-sample'; img-src 'self'; manifest-src 'self'; connect-src 'self' https://p.ledermann.dev; script-src 'self' 'sha256-S29vAOvCX4lX6sl5znB0JleV5qhhv6gmvVxwe3e3y8w=' 'report-sample'; base-uri 'self'; form-action 'none'; frame-ancestors 'none'; upgrade-insecure-requests
Date: Sat, 11 Jul 2026 03:23:37 GMT
ETag: W/"6a4f0272-e5e0"
Permissions-Policy: geolocation=(), midi=(), sync-xhr=(), microphone=(), camera=(), magnetometer=(), gyroscope=(), fullscreen=(self), payment=()
Referrer-Policy: same-origin
Server: nginx
Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
Vary: Accept-Encoding
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-XSS-Protection: 1; mode=block
Transfer-Encoding: chunked
Content-Encoding: gzip
Content-Type: text/html; charset=utf-8
Expires: Sat, 11 Jul 2026 03:26:37 GMT
Last-Modified: Thu, 09 Jul 2026 02:07:46 GMT
Content-Length: 15574

• https://ledermann.dev/ 2a01:4f8:c2c:2088::1 gzip used - 15574 / 58848 - 73.54 % Inline-JavaScript (∑/total): 1/327 Inline-CSS (∑/total): 7/19000	200	Html is minified: 151.47 % Other inline scripts (∑/total): 1/406	2.054	A
Alt-Svc: h3=":443"; ma=2592000
Cache-Control: max-age=180
Content-Security-Policy: default-src 'none'; font-src 'self' data:; style-src 'self' 'unsafe-inline' 'report-sample'; img-src 'self'; manifest-src 'self'; connect-src 'self' https://p.ledermann.dev; script-src 'self' 'sha256-S29vAOvCX4lX6sl5znB0JleV5qhhv6gmvVxwe3e3y8w=' 'report-sample'; base-uri 'self'; form-action 'none'; frame-ancestors 'none'; upgrade-insecure-requests
Date: Sat, 11 Jul 2026 03:23:42 GMT
ETag: W/"6a4f0272-e5e0"
Permissions-Policy: geolocation=(), midi=(), sync-xhr=(), microphone=(), camera=(), magnetometer=(), gyroscope=(), fullscreen=(self), payment=()
Referrer-Policy: same-origin
Server: nginx
Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
Vary: Accept-Encoding
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-XSS-Protection: 1; mode=block
Transfer-Encoding: chunked
Content-Encoding: gzip
Content-Type: text/html; charset=utf-8
Expires: Sat, 11 Jul 2026 03:26:42 GMT
Last-Modified: Thu, 09 Jul 2026 02:07:46 GMT
Content-Length: 15574

• http://ledermann.dev/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 116.203.125.190	404		0.020	A
Not Found
Visible Content:
Date: Sat, 11 Jul 2026 03:23:53 GMT
Content-Length: 0

• http://ledermann.dev/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 2a01:4f8:c2c:2088::1	404		0.023	A
Not Found
Visible Content:
Date: Sat, 11 Jul 2026 03:23:54 GMT
Content-Length: 0

• http://www.ledermann.dev/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 116.203.125.190	404		0.023	A
Not Found
Visible Content:
Date: Sat, 11 Jul 2026 03:23:56 GMT
Content-Length: 0

• http://www.ledermann.dev/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 2a01:4f8:c2c:2088::1	404		0.023	A
Not Found
Visible Content:
Date: Sat, 11 Jul 2026 03:23:57 GMT
Content-Length: 0

• https://116.203.125.190/ 116.203.125.190	-103		0.050	P
SecureConnectionError (3, 0x80131501). The SSL connection could not be established, see inner exception. Authentication failed because the remote party sent a TLS alert: '112' (FF: SSL_ERROR_UNRECOGNIZED_NAME_ALERT)

• https://[2a01:04f8:0c2c:2088:0000:0000:0000:0001]/ 2a01:4f8:c2c:2088::1	-103		0.053	P
SecureConnectionError (3, 0x80131501). The SSL connection could not be established, see inner exception. Authentication failed because the remote party sent a TLS alert: '112' (FF: SSL_ERROR_UNRECOGNIZED_NAME_ALERT)

7. Comments

	1. General Results, most used to calculate the result
A	name "ledermann.dev" is domain, public suffix is ".dev", top-level-domain is ".dev", top-level-domain-type is "generic", tld-manager is "Charleston Road Registry Inc.", num .dev-domains preloaded: 16 (complete: 276475)
A	Good: All ip addresses are public addresses
A	Good: Minimal 2 ip addresses per domain name found: ledermann.dev has 2 different ip addresses (authoritative).
A	Good: Minimal 2 ip addresses per domain name found: www.ledermann.dev has 2 different ip addresses (authoritative).
A	Good: Ipv4 and Ipv6 addresses per domain name found: ledermann.dev has 1 ipv4, 1 ipv6 addresses
A	Good: Ipv4 and Ipv6 addresses per domain name found: www.ledermann.dev has 1 ipv4, 1 ipv6 addresses
A	Good: No asked Authoritative Name Server had a timeout
A	Good: destination is https
A	Good - only one version with Http-Status 200
A	Good: one preferred version: non-www is preferred
A	Good: No cookie sent via http.
A	Good: HSTS has preload directive
A	Excellent: Domain is in the Google-Preload-List
A	Excellent: Domain is in the Mozilla/Firefox-Preload-List
A	HSTS-Preload-Status: Preloaded. Check https://hstspreload.org/ to learn some basics about the Google-Preload-List.
A	http://ledermann.dev/ 116.203.125.190	301	https://ledermann.dev/	Correct redirect http - https with the same domain name
A	http://ledermann.dev/ 2a01:4f8:c2c:2088::1	301	https://ledermann.dev/	Correct redirect http - https with the same domain name
A	http://www.ledermann.dev/ 116.203.125.190	301	https://www.ledermann.dev/	Correct redirect http - https with the same domain name
A	http://www.ledermann.dev/ 2a01:4f8:c2c:2088::1	301	https://www.ledermann.dev/	Correct redirect http - https with the same domain name
A	Good: More then one ip address per domain name found, checking all ip addresses the same http status and the same certificate found: Domain ledermann.dev, 2 ip addresses.
A	Good: More then one ip address per domain name found, checking all ip addresses the same http status and the same certificate found: Domain www.ledermann.dev, 2 ip addresses.
	Info: Checking the ip addresses of that domain name not exact one certificate found. So it's impossible to check if that domain requires Server Name Indication (SNI).: Domain ledermann.dev, 2 ip addresses.
	Info: Checking the ip addresses of that domain name not exact one certificate found. So it's impossible to check if that domain requires Server Name Indication (SNI).: Domain www.ledermann.dev, 2 ip addresses.
B	No _mta-sts TXT record found (mta-sts: Mail Transfer Agent Strict Transport Security - see RFC 8461). Read the result of server-daten.de (Url-Checks, Comments, Connections and DomainServiceRecords) to see a complete definition. Domainname: _mta-sts.ledermann.dev
	2. Header-Checks
A	ledermann.dev 116.203.125.190	Content-Security-Policy		Ok: Header without syntax errors found: default-src 'none'; font-src 'self' data:; style-src 'self' 'unsafe-inline' 'report-sample'; img-src 'self'; manifest-src 'self'; connect-src 'self' https://p.ledermann.dev; script-src 'self' 'sha256-S29vAOvCX4lX6sl5znB0JleV5qhhv6gmvVxwe3e3y8w=' 'report-sample'; base-uri 'self'; form-action 'none'; frame-ancestors 'none'; upgrade-insecure-requests
A				Good: default-src directive only with 'none' or 'self', additional sources are blocked.
A				Good: default-src without 'unsafe-inline' or 'unsave-eval'.
A				Good: form-action directive found. That reduces the risk sending data to unwanted domains. form-action is a navigation-directive, so default-src isn't used.
A				Good: frame-ancestors directive found. That limits pages who are allowed to use this page in a frame / iframe / object / embed / applet. frame-ancestors is a navigation-directive, so default-src isn't used.
A				Good: base-uri directive found. That limits the URLs which can be used in a document's <base> element. Because it's a document directive, default-src isn't used, so an own directive is required.
A				Good: No object-src found, but the default-src used as fallback is defined and restricted.
A				Good: script-src without 'unsafe-inline' and 'unsafe-eval' found. That's the recommended configuration.
A				Good: script-src without * and a scheme found.
A				Good: script-src without data: schema found. Why is this important? The data: schema allows hidden code injection. Insert <script src='data:application/javascript;base64,YWxlcnQoJ1hTUycpOw=='></script> in your page and see what happens.
A				Good: frame-src without data: defined or frame-src missing and the default-src used as fallback not allows the data: schema. That blocks hidden code injection. Insert <iframe src="data:text/html;charset=utf-8;base64,PCFET0NUWVBFIGh0bWw+PGh0bWw+PGJvZHk+PHA+YmVmb3JlPHNjcmlwdCB0eXBlPSJ0ZXh0L2phdmFzY3JpcHQiPmFsZXJ0KCdYU1MnKTwvc2NyaXB0PjxwPmFmdGVyPC9ib2R5PjwvaHRtbD4="></iframe> in your page and see what happens.
A		X-Content-Type-Options		Ok: Header without syntax errors found: nosniff
A		Referrer-Policy		Ok: Header without syntax errors found: same-origin
A		Permissions-Policy		Ok: Header without syntax errors found: geolocation=(), midi=(), sync-xhr=(), microphone=(), camera=(), magnetometer=(), gyroscope=(), fullscreen=(self), payment=()
A		X-Frame-Options		Ok: Header without syntax errors found: SAMEORIGIN
B				Info: Header is deprecated. May not longer work in modern browsers. SAMEORIGIN. Better solution: Use a Content-Security-Policy Header with a frame-ancestors directive. DENY - use 'none', SAMEORIGIN - use 'self'. If you want to allow some domains to frame your page, add these urls.
A		X-Xss-Protection		Ok: Header without syntax errors found: 1; mode=block
B				Info: Header is deprecated. May not longer work in modern browsers. 1; mode=block
A	ledermann.dev 2a01:4f8:c2c:2088::1	Content-Security-Policy		Ok: Header without syntax errors found: default-src 'none'; font-src 'self' data:; style-src 'self' 'unsafe-inline' 'report-sample'; img-src 'self'; manifest-src 'self'; connect-src 'self' https://p.ledermann.dev; script-src 'self' 'sha256-S29vAOvCX4lX6sl5znB0JleV5qhhv6gmvVxwe3e3y8w=' 'report-sample'; base-uri 'self'; form-action 'none'; frame-ancestors 'none'; upgrade-insecure-requests
A				Good: default-src directive only with 'none' or 'self', additional sources are blocked.
A				Good: default-src without 'unsafe-inline' or 'unsave-eval'.
A				Good: form-action directive found. That reduces the risk sending data to unwanted domains. form-action is a navigation-directive, so default-src isn't used.
A				Good: frame-ancestors directive found. That limits pages who are allowed to use this page in a frame / iframe / object / embed / applet. frame-ancestors is a navigation-directive, so default-src isn't used.
A				Good: base-uri directive found. That limits the URLs which can be used in a document's <base> element. Because it's a document directive, default-src isn't used, so an own directive is required.
A				Good: No object-src found, but the default-src used as fallback is defined and restricted.
A				Good: script-src without 'unsafe-inline' and 'unsafe-eval' found. That's the recommended configuration.
A				Good: script-src without * and a scheme found.
A				Good: script-src without data: schema found. Why is this important? The data: schema allows hidden code injection. Insert <script src='data:application/javascript;base64,YWxlcnQoJ1hTUycpOw=='></script> in your page and see what happens.
A				Good: frame-src without data: defined or frame-src missing and the default-src used as fallback not allows the data: schema. That blocks hidden code injection. Insert <iframe src="data:text/html;charset=utf-8;base64,PCFET0NUWVBFIGh0bWw+PGh0bWw+PGJvZHk+PHA+YmVmb3JlPHNjcmlwdCB0eXBlPSJ0ZXh0L2phdmFzY3JpcHQiPmFsZXJ0KCdYU1MnKTwvc2NyaXB0PjxwPmFmdGVyPC9ib2R5PjwvaHRtbD4="></iframe> in your page and see what happens.
A		X-Content-Type-Options		Ok: Header without syntax errors found: nosniff
A		Referrer-Policy		Ok: Header without syntax errors found: same-origin
A		Permissions-Policy		Ok: Header without syntax errors found: geolocation=(), midi=(), sync-xhr=(), microphone=(), camera=(), magnetometer=(), gyroscope=(), fullscreen=(self), payment=()
A		X-Frame-Options		Ok: Header without syntax errors found: SAMEORIGIN
B				Info: Header is deprecated. May not longer work in modern browsers. SAMEORIGIN. Better solution: Use a Content-Security-Policy Header with a frame-ancestors directive. DENY - use 'none', SAMEORIGIN - use 'self'. If you want to allow some domains to frame your page, add these urls.
A		X-Xss-Protection		Ok: Header without syntax errors found: 1; mode=block
B				Info: Header is deprecated. May not longer work in modern browsers. 1; mode=block
B	ledermann.dev 116.203.125.190	Cross-Origin-Embedder-Policy		Info: Missing Header
B	ledermann.dev 116.203.125.190	Cross-Origin-Opener-Policy		Info: Missing Header
B	ledermann.dev 116.203.125.190	Cross-Origin-Resource-Policy		Info: Missing Header
B	ledermann.dev 2a01:4f8:c2c:2088::1	Cross-Origin-Embedder-Policy		Info: Missing Header
B	ledermann.dev 2a01:4f8:c2c:2088::1	Cross-Origin-Opener-Policy		Info: Missing Header
B	ledermann.dev 2a01:4f8:c2c:2088::1	Cross-Origin-Resource-Policy		Info: Missing Header
	3. DNS- and NameServer - Checks
A	Info:: 18 Root-climbing DNS Queries required to find all IPv4- and IPv6-Addresses of 4 Name Servers.
A	Info:: 18 Queries complete, 18 with IPv6, 0 with IPv4.
A	Good: All DNS Queries done via IPv6.
	Ok (4 - 8):: An average of 4.5 queries per domain name server required to find all ip addresses of all name servers.
A	Info:: 4 different Name Servers found: ns1.gandi.net, ns-141-a.gandi.net, ns-73-b.gandi.net, ns-76-c.gandi.net, 3 Name Servers included in Delegation: ns-141-a.gandi.net, ns-73-b.gandi.net, ns-76-c.gandi.net, 3 Name Servers included in 1 Zone definitions: ns-141-a.gandi.net, ns-73-b.gandi.net, ns-76-c.gandi.net, 1 Name Servers listed in SOA.Primary: ns1.gandi.net.
A	Good: Only one SOA.Primary Name Server found.: ns1.gandi.net.
	Error: SOA.Primary Name Server not included in the delegation set.: ns1.gandi.net.
A	Good: Consistency between delegation and zone. The set of NS records served by the authoritative name servers must match those proposed for the delegation in the parent zone. Ordered list of name servers: ns-141-a.gandi.net, ns-73-b.gandi.net, ns-76-c.gandi.net
A	Good: All Name Server Domain Names have a Public Suffix.
A	Good: All Name Server Domain Names ending with a Public Suffix have minimal one IPv4- or IPv6 address.
A	Good: All Name Server ip addresses are public.
A	Good: Minimal 2 different name servers (public suffix and public ip address) found: 4 different Name Servers found
A	Good: All name servers have ipv4- and ipv6-addresses.: 4 different Name Servers found
	Warning: All Name Servers have the same Top Level Domain / Public Suffix. If there is a problem with that Top Level Domain, your domain may be affected. Better: Use Name Servers with different top level domains.: 4 Name Servers, 1 Top Level Domain: net
	Warning: All Name Servers have the same domain name. If there is a problem with that domain name (or with the name servers of that domain name), your domain may be affected. Better: Use Name Servers with different domain names / different top level domains.: Only one domain name used: gandi.net
	Warning: All Name Servers from the same Country / IP location.: 4 Name Servers, 1 Countries: FR
A	Info: Ipv4-Subnet-list: 4 Name Servers, 3 different subnets (first Byte): 173., 213., 217., 3 different subnets (first two Bytes): 173.246., 213.167., 217.70., 3 different subnets (first three Bytes): 173.246.100., 213.167.230., 217.70.187.
A	Good: Name Server IPv4-addresses from different subnet found:
A	Info: IPv6-Subnet-list: 4 Name Servers with IPv6, 2 different subnets (first block): 2001:, 2604:, 2 different subnets (first two blocks): 2001:4b98:, 2604:3400:, 3 different subnets (first three blocks): 2001:4b98:aaaa:, 2001:4b98:aaab:, 2604:3400:aaac:, 3 different subnets (first four blocks): 2001:4b98:aaaa:0000:, 2001:4b98:aaab:0000:, 2604:3400:aaac:0000:
A	Good: Name Server IPv6 addresses from different subnets found.
A	Good: Nameserver supports TCP connections: 8 good Nameserver
A	Good: Nameserver supports Echo Capitalization: 8 good Nameserver
A	Good: Nameserver supports EDNS with max. 512 Byte Udp payload, message is smaller: 8 good Nameserver
A	Good: Nameserver has passed 10 EDNS-Checks (OP100, FLAGS, V1, V1OP100, V1FLAGS, DNSSEC, V1DNSSEC, NSID, COOKIE, CLIENTSUBNET): 8 good Nameserver
	Nameserver doesn't pass all EDNS-Checks: ns1.gandi.net: OP100: no result. FLAGS: no result. V1: no result. V1OP100: no result. V1FLAGS: no result. DNSSEC: no result. V1DNSSEC: no result. NSID: no result. COOKIE: no result. CLIENTSUBNET: no result.
A	Good: All SOA have the same Serial Number
A	Good: CAA entries found, creating certificate is limited: letsencrypt.org is allowed to create certificates
A	Good: CAA entries found, creating certificate is limited: letsencrypt.org is allowed to create wildcard-certificates
	4. Content- and Performance-critical Checks
A	Good: All checks /.well-known/acme-challenge/random-filename without redirects answer with the expected http status 404 - Not Found. Creating a Letsencrypt certificate via http-01 challenge should work. If it doesn't work: Check your vHost configuration (apachectl -S, httpd -S, nginx -T). Every combination of port and ServerName / ServerAlias (Apache) or Server (Nginx) must be unique. Merge duplicated entries in one vHost. If you use an IIS, extensionless files must be allowed in the /.well-known/acme-challenge subdirectory. Create a web.config in that directory. Content: <configuration><system.webServer><staticContent><mimeMap fileExtension="." mimeType="text/plain" /></staticContent></system.webServer></configuration>. If you have a redirect http ⇒ https, that's ok, Letsencrypt follows such redirects to port 80 / 443 (same or other server). There must be a certificate. But the certificate may be expired, self signed or with a not matching domain name. Checking the validation file Letsencrypt ignores such certificate errors. Trouble creating a certificate? Use https://community.letsencrypt.org/ to ask.
A	Good: Every https result with status 200 and greater 1024 Bytes is compressed (gzip, deflate, br checked).
	https://ledermann.dev/ 116.203.125.190	200		Warning: Https + http status 200 + Inline CSS / JavaScript found. Don't use inline CSS / JavaScript. These are compiled and re-used ressources, save these with a long Cache-Control max-age - header.
	https://ledermann.dev/ 2a01:4f8:c2c:2088::1	200		Warning: Https + http status 200 + Inline CSS / JavaScript found. Don't use inline CSS / JavaScript. These are compiled and re-used ressources, save these with a long Cache-Control max-age - header.
	https://ledermann.dev/ 116.203.125.190	200		Warning: Https result with status 200 found, Html-Content is too big. Should be max. 110 %. May contain inline CSS / JavaScript, too much comments or white space. Re-used ressources - create files with a long Cache-Control max-age header. Remove comments and white space.
	https://ledermann.dev/ 2a01:4f8:c2c:2088::1	200		Warning: Https result with status 200 found, Html-Content is too big. Should be max. 110 %. May contain inline CSS / JavaScript, too much comments or white space. Re-used ressources - create files with a long Cache-Control max-age header. Remove comments and white space.
A	Good: Every https connection via port 443 supports the http/2 protocol via ALPN.
	https://ledermann.dev/ 116.203.125.190	200		Critical: Some script Elements (type text/javascript) with a src-Attribute don't have a defer / async - Attribute. Loading and executing these JavaScripts blocks parsing and rendering the Html-Output. That's bad if your site is large or the connection is slow / mobile usage. Use "async" if the js file has only functions (so nothing is executed after parsing the file) or is independend. Use "defer" if the order of the scripts is important. All "defer" scripts are executed before the DOMContentLoaded event is fired. Check https://developer.mozilla.org/en-US/docs/Web/HTML/Element/script to see some details.: 8 script elements without defer/async.
	https://ledermann.dev/ 2a01:4f8:c2c:2088::1	200		Critical: Some script Elements (type text/javascript) with a src-Attribute don't have a defer / async - Attribute. Loading and executing these JavaScripts blocks parsing and rendering the Html-Output. That's bad if your site is large or the connection is slow / mobile usage. Use "async" if the js file has only functions (so nothing is executed after parsing the file) or is independend. Use "defer" if the order of the scripts is important. All "defer" scripts are executed before the DOMContentLoaded event is fired. Check https://developer.mozilla.org/en-US/docs/Web/HTML/Element/script to see some details.: 8 script elements without defer/async.
A	Good: All CSS / JavaScript files are sent compressed (gzip, deflate, br checked). That reduces the content of the files. 12 external CSS / JavaScript files found
A	Good: All images with internal compression not compressed. Some Images (.png, .jpg, .jpeg, .webp, .gif) are already compressed, so an additional compression isn't helpful. 24 images (type image/png, image/jpg, image/jpeg, image/webp, image/gif) found without additional Compression. Not required because these images are already compressed
A	Good: All CSS / JavaScript files are sent with a long Cache-Control header (minimum 7 days). So the browser can re-use these files, no download is required. 20 external CSS / JavaScript files with long Cache-Control max-age found
	Warning: Images with a missing or too short Cache-Control header found. Browsers should cache and re-use these files. 4 image files without Cache-Control-Header, 0 with Cache-Control, but no max-age, 0 with Cache-Control max-age too short (minimum 7 days), 24 with Cache-Control long enough, 28 complete.
A	Good: All checked attribute values are enclosed in quotation marks (" or ').
A	Good: All img-elements have a valid alt-attribute.: 4 img-elements found.
A	Good: Domainname is not on the "Specially Designated Nationals And Blocked Persons List" (SDN). That's an US-list of individuals and companies owned or controlled by, or acting for or on behalf of, targeted countries. It also lists individuals, groups, and entities, such as terrorists and narcotics traffickers designated under programs that are not country-specific. Collectively, such individuals and companies are called "Specially Designated Nationals" or "SDNs." Their assets are blocked and U.S. persons are generally prohibited from dealing with them. So if a domain name is on that list, it's impossible to create a Letsencrypt certificate with that domain name. Check the list manual - https://www.treasury.gov/resource-center/sanctions/sdn-list/pages/default.aspx
A	Duration: 235420 milliseconds, 235.420 seconds

8. Connections

Domain

Port

Cert.

Protocol

KeyExchange

Strength

Cipher

Strength

HashAlgorithm

OCSP stapling

Domain/KeyExchange

IP/Strength

Port/Cipher

Cert./Strength

Protocol/HashAlgorithm

OCSP stapling

ledermann.dev

116.203.125.190

443

Tls12

ECDH Ephermal

256

Aes128

128

Sha256

not supported

ledermann.dev

116.203.125.190

443

Tls12

ECDH Ephermal

256

Aes128

128

Sha256

not supported

http/2 via ALPN supported

Tls.1.2
no Tls.1.1
no Tls.1.0
no Ssl3
no Ssl2

http/2 via ALPN supported

Tls.1.2
no Tls.1.1
no Tls.1.0
no Ssl3
no Ssl2

Chain (complete)	1	CN=ledermann.dev
	2	CN=R13, O=Let's Encrypt, C=US

ledermann.dev

2a01:4f8:c2c:2088::1

443

Tls12

ECDH Ephermal

256

Aes128

128

Sha256

not supported

ledermann.dev

2a01:4f8:c2c:2088::1

443

Tls12

ECDH Ephermal

256

Aes128

128

Sha256

not supported

http/2 via ALPN supported

Tls.1.2
no Tls.1.1
no Tls.1.0
no Ssl3
no Ssl2

http/2 via ALPN supported

Tls.1.2
no Tls.1.1
no Tls.1.0
no Ssl3
no Ssl2

Chain (complete)	1	CN=ledermann.dev
	2	CN=R13, O=Let's Encrypt, C=US

www.ledermann.dev

116.203.125.190

443

Tls12

ECDH Ephermal

256

Aes128

128

Sha256

not supported

www.ledermann.dev

116.203.125.190

443

Tls12

ECDH Ephermal

256

Aes128

128

Sha256

not supported

http/2 via ALPN supported

Tls.1.2
no Tls.1.1
no Tls.1.0
no Ssl3
no Ssl2

http/2 via ALPN supported

Tls.1.2
no Tls.1.1
no Tls.1.0
no Ssl3
no Ssl2

Chain (complete)	1	CN=ledermann.dev
	2	CN=R13, O=Let's Encrypt, C=US

www.ledermann.dev

2a01:4f8:c2c:2088::1

443

Tls12

ECDH Ephermal

256

Aes128

128

Sha256

not supported

www.ledermann.dev

2a01:4f8:c2c:2088::1

443

Tls12

ECDH Ephermal

256

Aes128

128

Sha256

not supported

http/2 via ALPN supported

Tls.1.2
no Tls.1.1
no Tls.1.0
no Ssl3
no Ssl2

http/2 via ALPN supported

Tls.1.2
no Tls.1.1
no Tls.1.0
no Ssl3
no Ssl2

Chain (complete)	1	CN=ledermann.dev
	2	CN=R13, O=Let's Encrypt, C=US

9. Certificates

CN=ledermann.dev

17.05.2026

15.08.2026
expires in 7 days

ledermann.dev, www.ledermann.dev - 2 entries

CN=ledermann.dev

17.05.2026

15.08.2026
expires in 7 days

ledermann.dev, www.ledermann.dev - 2 entries

Keyalgorithm	RSA encryption (4096 bit)
Signatur:	SHA256 With RSA-Encryption
Serial Number:	0607F76513C15CE299BC1DA3B844DD17CA03
Thumbprint:	9CF520B935197C479677FD36BA55E74C7D02C2B6
SHA256 / Certificate:	3rKzXA0Fz+ZNpey3ydyrYwccA2pgIaqcqz+JI9bpOS8=
SHA256 hex / Cert (DANE * 0 1):	e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA256 hex / PublicKey (DANE * 1 1):	d3a64b39150b4a32d73ce4c5760a35aa1269c1e2f9dc9a3c3a34b4ab89818c0f
SHA256 hex / Subject Public Key Information (SPKI):	d3a64b39150b4a32d73ce4c5760a35aa1269c1e2f9dc9a3c3a34b4ab89818c0f (is buggy, ignore the result)
SPKI checked via https://v1.pwnedkeys.com/spki-hash:	Good: Key isn't compromised
OCSP - Url:
OCSP - must staple:	no
Certificate Transparency:	yes
Enhanced Key Usage:	Serverauthentifizierung (1.3.6.1.5.5.7.3.1)

CN=R13, O=Let's Encrypt, C=US

13.03.2024

13.03.2027
expires in 217 days

CN=R13, O=Let's Encrypt, C=US

13.03.2024

13.03.2027
expires in 217 days

Keyalgorithm	RSA encryption (2048 bit)
Signatur:	SHA256 With RSA-Encryption
Serial Number:	5A00F212D8D4B480F3924157EA298305
Thumbprint:	22FF89586561FC2D52F77491E9F1EFF1B80BE33E
SHA256 / Certificate:	07EoIWqEP47xMhUB9d9Spd9Sk57iwZKXcSzT3k1Bk1Q=
SHA256 hex / Cert (DANE * 0 1):	e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA256 hex / PublicKey (DANE * 1 1):	025490860b498ab73c6a12f27a49ad5fe230fafe3ac8f6112c9b7d0aad46941d
SHA256 hex / Subject Public Key Information (SPKI):
SPKI checked via https://v1.pwnedkeys.com/spki-hash:	Check unknown. No result 404 / 200
OCSP - Url:
OCSP - must staple:	no
Certificate Transparency:	no
Enhanced Key Usage:	Clientauthentifizierung (1.3.6.1.5.5.7.3.2), Serverauthentifizierung (1.3.6.1.5.5.7.3.1)

CN=ISRG Root X1, O=Internet Security Research Group, C=US

04.06.2015

04.06.2035
expires in 3222 days

CN=ISRG Root X1, O=Internet Security Research Group, C=US

04.06.2015

04.06.2035
expires in 3222 days

Keyalgorithm	RSA encryption (4096 bit)
Signatur:	SHA256 With RSA-Encryption
Serial Number:	008210CFB0D240E3594463E0BB63828B00
Thumbprint:	CABD2A79A1076A31F21D253635CB039D4329A5E8
SHA256 / Certificate:	lrzsBiZJdvN0YHeazyjFp8/oo8Cq4RqP/O4FwL3fCMY=
SHA256 hex / Cert (DANE * 0 1):	96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
SHA256 hex / PublicKey (DANE * 1 1):	0b9fa5a59eed715c26c1020c711b4f6ec42d58b0015e14337a39dad301c5afc3
SHA256 hex / Subject Public Key Information (SPKI):	0b9fa5a59eed715c26c1020c711b4f6ec42d58b0015e14337a39dad301c5afc3
SPKI checked via https://v1.pwnedkeys.com/spki-hash:	Good: Key isn't compromised
OCSP - Url:
OCSP - must staple:	no
Certificate Transparency:	no
Enhanced Key Usage:

10. Last Certificates - Certificate Transparency Log Check

1. Source CertSpotter - active certificates (one check per day)

Issuer				last 7 days	active	num Certs
CN=R3, O=Let's Encrypt, C=US				0	0	5
CN=R11, O=Let's Encrypt, C=US				0	0	5
CN=R13, O=Let's Encrypt, C=US				0	1	2
CN=R12, O=Let's Encrypt, C=US				0	0	2

CertSpotter-Id	Issuer	not before	not after	Domain names	LE-Duplicate	next LE
14945618446 leaf cert	CN=R13, O=Let's Encrypt, C=US	2026-05-17 09:24:23	2026-08-15 09:24:22	ledermann.dev, www.ledermann.dev - 2 entries
14173571688 leaf cert	CN=R13, O=Let's Encrypt, C=US	2026-03-18 05:13:19	2026-06-16 05:13:18	ledermann.dev, www.ledermann.dev - 2 entries
13456824116 leaf cert	CN=R12, O=Let's Encrypt, C=US	2026-01-16 07:05:05	2026-04-16 07:05:04	ledermann.dev, www.ledermann.dev - 2 entries
11908228412 leaf cert	CN=R12, O=Let's Encrypt, C=US	2025-09-17 06:39:20	2025-12-16 06:39:19	ledermann.dev, www.ledermann.dev - 2 entries
11176507955 leaf cert	CN=R11, O=Let's Encrypt, C=US	2025-07-19 03:32:52	2025-10-17 03:32:51	ledermann.dev, www.ledermann.dev - 2 entries
10473954805 leaf cert	CN=R11, O=Let's Encrypt, C=US	2025-05-20 04:15:38	2025-08-18 04:15:37	ledermann.dev, www.ledermann.dev - 2 entries
9853103639 leaf cert	CN=R11, O=Let's Encrypt, C=US	2025-03-20 08:29:08	2025-06-18 08:29:07	ledermann.dev, www.ledermann.dev - 2 entries
8566634887 leaf cert	CN=R11, O=Let's Encrypt, C=US	2024-11-03 02:53:21	2025-02-01 02:53:20	georg-ledermann.de, ledermann.dev, www.georg-ledermann.de, www.ledermann.dev - 4 entries
7642840449 leaf cert	CN=R11, O=Let's Encrypt, C=US	2024-07-05 04:06:59	2024-10-03 04:06:58	georg-ledermann.de, ledermann.dev, www.georg-ledermann.de, www.ledermann.dev - 4 entries
7263508114 leaf cert	CN=R3, O=Let's Encrypt, C=US	2024-05-06 03:12:36	2024-08-04 03:12:35	georg-ledermann.de, ledermann.dev, www.georg-ledermann.de, www.ledermann.dev - 4 entries
6879960640 leaf cert	CN=R3, O=Let's Encrypt, C=US	2024-03-06 04:34:47	2024-06-04 04:34:46	georg-ledermann.de, ledermann.dev, www.georg-ledermann.de, www.ledermann.dev - 4 entries
6507746841 leaf cert	CN=R3, O=Let's Encrypt, C=US	2024-01-06 04:51:11	2024-04-05 04:51:10	georg-ledermann.de, ledermann.dev, www.georg-ledermann.de, www.ledermann.dev - 4 entries
6141970392 leaf cert	CN=R3, O=Let's Encrypt, C=US	2023-11-07 03:47:21	2024-02-05 03:47:20	georg-ledermann.de, ledermann.dev, www.georg-ledermann.de, www.ledermann.dev - 4 entries
5812188646 leaf cert	CN=R3, O=Let's Encrypt, C=US	2023-09-07 04:46:23	2023-12-06 04:46:22	georg-ledermann.de, ledermann.dev, www.georg-ledermann.de, www.ledermann.dev - 4 entries

2. Source crt.sh - old and new certificates, sometimes very slow - only certificates with "not after" > of the last months are listed

Issuer				last 7 days	active	num Certs
CN=R11, O=Let's Encrypt, C=US				0	0	3
CN=R3, O=Let's Encrypt, C=US				0 /0 new	0	2
CN=R10, O=Let's Encrypt, C=US				0	0	1

CRT-Id	Issuer	not before	not after	Domain names	LE-Duplicate	next LE
18511877161 leaf cert	CN=R11, O=Let's Encrypt, C=US	2025-05-20 02:15:38	2025-08-18 02:15:37	ledermann.dev, www.ledermann.dev 2 entries
17273682960 leaf cert	CN=R11, O=Let's Encrypt, C=US	2025-03-20 07:29:08	2025-06-18 06:29:07	ledermann.dev, www.ledermann.dev 2 entries
16324790040 leaf cert	CN=R10, O=Let's Encrypt, C=US	2025-01-02 06:27:57	2025-04-02 05:27:56	georg-ledermann.de, ledermann.dev, www.georg-ledermann.de, www.ledermann.dev 4 entries
13648415605 leaf cert	CN=R11, O=Let's Encrypt, C=US	2024-07-05 02:06:59	2024-10-03 02:06:58	georg-ledermann.de, ledermann.dev, www.georg-ledermann.de, www.ledermann.dev 4 entries
12965461764 leaf cert	CN=R3, O=Let's Encrypt, C=US	2024-05-06 01:12:36	2024-08-04 01:12:35	georg-ledermann.de, ledermann.dev, www.georg-ledermann.de, www.ledermann.dev 4 entries
12289663808 leaf cert	CN=R3, O=Let's Encrypt, C=US	2024-03-06 03:34:47	2024-06-04 02:34:46	georg-ledermann.de, ledermann.dev, www.georg-ledermann.de, www.ledermann.dev 4 entries

11. Html-Content - Entries

Summary

							Subresource Integrity (SRI)
Domainname	HtmlElement	rel/property	∑	∑ size	∑ problems	∑ int.	∑ ext.	∑ Origin poss.	∑ SRI ParseErrors	∑ SRI valid	∑ SRI missing
https://ledermann.dev/ 116.203.125.190	a		32		0			0	0	0
	link	alternate	1		0			0	0	0
	link	stylesheet	2	13,132 Bytes	0	2	0	0	0	0
	link	other	13	84,338 Bytes	0	8	0	0	0	0
	meta	og	9	299,625 Bytes	0	2	0	0	0	0
	meta	twitter	3		0			0	0	0
	meta	other	12		0			0	0	0
	picture		2		0			0	0	0
	script		8	25,390 Bytes	0	8	0	0	0	0
	style		12	259,276 Bytes	0	12	0	0	0	0
https://ledermann.dev/ 2a01:4f8:c2c:2088::1	a		32		0			0	0	0
	link	alternate	1		0			0	0	0
	link	stylesheet	2	13,132 Bytes	0	2	0	0	0	0
	link	other	13	84,338 Bytes	0	8	0	0	0	0
	meta	og	9	299,625 Bytes	0	2	0	0	0	0
	meta	twitter	3		0			0	0	0
	meta	other	12		0			0	0	0
	picture		2		0			0	0	0
	script		8	25,390 Bytes	0	8	0	0	0	0
	style		12	259,276 Bytes	0	12	0	0	0	0

Details (currently limited to 500 rows - some problems with spam users)

Domainname	Html-Element	name/equiv/ property/rel	href/src/content	HttpStatus	∑
https://ledermann.dev/ 116.203.125.190	a		#content			1	ok
							ok


	a		/			2	ok
							ok


	a		/blog/			2	ok
							ok


	a		/datenschutz/			1	ok
							ok


	a		/kontakt/			5	ok
							ok


	a		/projekte/			4	ok
							ok


	a		/projekte/#astrodna			1	ok
							ok


	a		/projekte/#survey-engine			1	ok
							ok


	a		/projekte/#towerapp			1	ok
							ok


	a		https://bsky.app/profile/ledermann.dev			2	ok
							ok


	a		https://de.wikipedia.org/wiki/J%C3%BClich			1	ok
							ok


	a		https://github.com/ledermann			2	ok
							ok


	a		https://github.com/solectrus/solectrus			1	ok
							ok


	a		https://mastodon.social/@ledermann			2	ok
							ok


	a		https://solectrus.de			1	ok
							ok


	a		https://wakatime.com/@ledermann			1	ok
							ok


	a		https://www.linkedin.com/in/ledermann/			2	ok
							ok


	a		https://www.xing.com/profile/Georg_Ledermann			2	ok
							ok


	link	alternate	/feed.xml			1	ok
							ok


	link	apple-touch-icon	/apple-touch-icon.png		200	1	ok
				image/png X-Content-Type-Options nosniff found			ok
	Cache-Control: public, max-age=31536000, immutable with long duration found.			No Compression - 812 Bytes
	ETag: "6a4f0272-32c"

	link	canonical	https://ledermann.dev/			1	ok
							ok


	link	icon	/favicon-16x16.png		200	1	ok
				image/png X-Content-Type-Options nosniff found			ok
	Cache-Control: public, max-age=31536000, immutable with long duration found.			No Compression - 250 Bytes
	ETag: "6a4f0272-fa"

	link	icon	/favicon-32x32.png		200	1	ok
				image/png X-Content-Type-Options nosniff found			ok
	Cache-Control: public, max-age=31536000, immutable with long duration found.			No Compression - 328 Bytes
	ETag: "6a4f0272-148"

	link	manifest	/manifest.webmanifest			1	ok
							ok


	link	mask-icon	/safari-pinned-tab.svg		200	1	ok
				image/svg+xml; charset=utf-8 X-Content-Type-Options nosniff found			ok
	Cache-Control: public, max-age=31536000, immutable with long duration found.			Wrong Compression (gzip): 548/872 Bytes
	ETag: W/"6a4f0272-368"

	link	me	https://bsky.app/profile/ledermann.dev			1	ok
							ok


	link	me	https://mastodon.social/@ledermann			1	ok
							ok


	link	me	https://x.com/ledermann			1	ok
							ok


	link	preload	/_astro/fonts/17cf433661d1a8e3.woff2		200	1	ok
				font/woff2 X-Content-Type-Options nosniff found			ok
	Cache-Control: public, max-age=31536000, immutable with long duration found.			No Compression (): 17968/17968 Bytes, font already compressed
	ETag: "6a4f0271-4630"

	link	preload	/_astro/fonts/5d5b9bdb05fd0cd8.woff2		200	1	ok
				font/woff2 X-Content-Type-Options nosniff found			ok
	Cache-Control: public, max-age=31536000, immutable with long duration found.			No Compression (): 23580/23580 Bytes, font already compressed
	ETag: "6a4f0271-5c1c"

	link	preload	/_astro/fonts/7622edd1fc8f52c6.woff2		200	1	ok
				font/woff2 X-Content-Type-Options nosniff found			ok
	Cache-Control: public, max-age=31536000, immutable with long duration found.			No Compression (): 18000/18000 Bytes, font already compressed
	ETag: "6a4f0271-4650"

	link	preload	/_astro/fonts/f7f338cff1cf623d.woff2		200	1	ok
				font/woff2 X-Content-Type-Options nosniff found			ok
	Cache-Control: public, max-age=31536000, immutable with long duration found.			No Compression (): 22852/22852 Bytes, font already compressed
	ETag: "6a4f0271-5944"

	link	stylesheet	/_astro/_astro_assets.BHsrmB4F.css		200	1	ok
				text/css; charset=utf-8 X-Content-Type-Options nosniff found			ok
	Cache-Control: public, max-age=31536000, immutable - with long duration found.			Compression (gzip): 378/1857 Bytes
	ETag: W/"6a4f0272-741"
	local SRI possible, possible hash-values: sha256-oUUMcxaq+WlkSs/zVbZE1YlI79CtRF14DJK0rYzWykE= sha384-RHm78ty98BM6rNAZeGLlea90t5AlSVJhuiuEVGMsk8/p7yRI1YGaqlvHcgSxC7Xt sha512-SLFyz3402FTiOoxmOW8iILFhXFsjx6xybfhmwIL9sGUuczdAY/YB3zxJBxXFmrz2OlZDqJ0RbJc4XPPESNBdyQ== <link rel="stylesheet" href="/_astro/_astro_assets.BHsrmB4F.css" crossorigin="anonymous" integrity="sha256-oUUMcxaq+WlkSs/zVbZE1YlI79CtRF14DJK0rYzWykE=" />

	link	stylesheet	/_astro/FooterLinks.B-Pvkfhw.css		200	1	ok
				text/css; charset=utf-8 X-Content-Type-Options nosniff found			ok
	Cache-Control: public, max-age=31536000, immutable - with long duration found.			Compression (gzip): 12754/55702 Bytes
	ETag: W/"6a4f0272-d996"
	local SRI possible, possible hash-values: sha256-Pmy6pm7EO3RDPg3gr6hR0eZqC3Cm+9wrbgefY5cvtqw= sha384-DYBnLTggxgBvm2vUwF4l3YEqXPi0n3/g9H6ISSEHfq5WmqwVXJxA8QrvnRHuO8XA sha512-EiC+AE5z0FCMtYLfP4Ow5ToNygylJRYoAXtgDj/UEuWRkud0EYF/W7h6lt7/OtoqWeM/Arnrv8K2M1lTeDKmbw== <link rel="stylesheet" href="/_astro/FooterLinks.B-Pvkfhw.css" crossorigin="anonymous" integrity="sha256-Pmy6pm7EO3RDPg3gr6hR0eZqC3Cm+9wrbgefY5cvtqw=" />

	meta	charset	utf-8			1	ok
							ok


	meta	og:description	Full Stack Developer mit Schwerpunkt Ruby on Rails – ich baue langlebige Web-Anwendungen, seit über 25 Jahren und auf dem Stand von heute.			1	ok
							ok


	meta	og:image	https://ledermann.dev/assets/images/photo.jpg		200	1	ok
				image/jpeg X-Content-Type-Options nosniff found			ok
	Cache-Control: public, max-age=31536000, immutable with long duration found.			No Compression - 284051 Bytes
	ETag: "6a4f0272-45593"

	meta	og:image:height	1200			1	ok
							ok


	meta	og:image:width	1200			1	ok
							ok


	meta	og:locale	de_DE			1	ok
							ok


	meta	og:site_name	Georg Ledermann, Full Stack Developer			1	ok
							ok


	meta	og:title	Georg Ledermann, Full Stack Developer			1	ok
							ok


	meta	og:type	website			1	ok
							ok


	meta	og:url	https://ledermann.dev/		200	1	ok
				text/html; charset=utf-8 X-Content-Type-Options nosniff found			ok
				15574 Bytes
	ETag: W/"6a4f0272-e5e0"

	meta	twitter:account_id	4503599630504058			1	ok
							ok


	meta	twitter:image	https://ledermann.dev/assets/images/photo.jpg			1	ok
							ok


	meta	twitter:title	Georg Ledermann, Full Stack Developer			1	ok
							ok


	meta	astro-view-transitions-enabled	true			1	ok
							ok


	meta	astro-view-transitions-fallback	animate			1	ok
							ok


	meta	author	Georg Ledermann			1	ok
							ok


	meta	description	Full Stack Developer mit Schwerpunkt Ruby on Rails – ich baue langlebige Web-Anwendungen, seit über 25 Jahren und auf dem Stand von heute.			1	ok
							ok


	meta	generator	Astro v7.0.7			1	ok
							ok


	meta	theme-color	#1a1714			1	ok
							ok


	meta	theme-color	#fbfaf7			1	ok
							ok


	meta	twitter:card	summary_large_image			1	ok
							ok


	meta	twitter:creator	@ledermann			1	ok
							ok


	meta	twitter:site	@ledermann			1	ok
							ok


	meta	viewport	width=device-width, initial-scale=1.0			1	ok
							ok


	picture
		• source		type: image/webp		1	ok
							ok

		srcset	/_astro/photo.bDomfrxe_1IiPgg.webp 640w, /_astro/photo.bDomfrxe_1E7FKB.webp 750w, /_astro/photo.bDomfrxe_Z1cTQPs.webp 828w, /_astro/photo.bDomfrxe_ZvB1L2.webp 1080w, /_astro/photo.bDomfrxe_1haVRO.webp 1280w			1	ok
							ok
		/_astro/photo.bDomfrxe_1IiPgg.webp 640w			200	1	ok
				image/webp X-Content-Type-Options nosniff found			ok
		Cache-Control: public, max-age=31536000, immutable with long duration found.		No Compression - 51872 Bytes
	ETag: "6a4f0272-caa0"
		/_astro/photo.bDomfrxe_1E7FKB.webp 750w			200	1	ok
				image/webp X-Content-Type-Options nosniff found			ok
		Cache-Control: public, max-age=31536000, immutable with long duration found.		No Compression - 66616 Bytes
	ETag: "6a4f0272-10438"
		/_astro/photo.bDomfrxe_Z1cTQPs.webp 828w			200	1	ok
				image/webp X-Content-Type-Options nosniff found			ok
		Cache-Control: public, max-age=31536000, immutable with long duration found.		No Compression - 77588 Bytes
	ETag: "6a4f0272-12f14"
		/_astro/photo.bDomfrxe_ZvB1L2.webp 1080w			200	1	ok
				image/webp X-Content-Type-Options nosniff found			ok
		Cache-Control: public, max-age=31536000, immutable with long duration found.		No Compression - 120812 Bytes
	ETag: "6a4f0272-1d7ec"
		/_astro/photo.bDomfrxe_1haVRO.webp 1280w			200	1	ok
				image/webp X-Content-Type-Options nosniff found			ok
		Cache-Control: public, max-age=31536000, immutable with long duration found.		No Compression - 154774 Bytes
	ETag: "6a4f0272-25c96"
		• source		type: image/avif		1	ok
							ok

		srcset	/_astro/photo.bDomfrxe_20TWoB.avif 640w, /_astro/photo.bDomfrxe_1VIMSW.avif 750w, /_astro/photo.bDomfrxe_Z2qrweE.avif 828w, /_astro/photo.bDomfrxe_2hnAtl.avif 1080w, /_astro/photo.bDomfrxe_Z101yFJ.avif 1280w			1	ok
							ok
		/_astro/photo.bDomfrxe_20TWoB.avif 640w			200	1	ok
				image/avif X-Content-Type-Options nosniff found			ok
		No Cache-Control header		No Compression - 25261 Bytes
	ETag: "6a4f0272-62ad"
		/_astro/photo.bDomfrxe_1VIMSW.avif 750w			200	1	ok
				image/avif X-Content-Type-Options nosniff found			ok
		No Cache-Control header		No Compression - 32045 Bytes
	ETag: "6a4f0272-7d2d"
		/_astro/photo.bDomfrxe_Z2qrweE.avif 828w			200	1	ok
				image/avif X-Content-Type-Options nosniff found			ok
		No Cache-Control header		No Compression - 37241 Bytes
	ETag: "6a4f0272-9179"
		/_astro/photo.bDomfrxe_2hnAtl.avif 1080w			200	1	ok
				image/avif X-Content-Type-Options nosniff found			ok
		No Cache-Control header		No Compression - 56570 Bytes
	ETag: "6a4f0272-dcfa"
		/_astro/photo.bDomfrxe_Z101yFJ.avif 1280w			200	1	ok
				image/avif X-Content-Type-Options nosniff found			ok
		No Cache-Control header		No Compression - 71448 Bytes
	ETag: "6a4f0272-11718"
		• img
			/_astro/photo.bDomfrxe_AOT8k.jpg		200	1	ok
	alt: Georg Ledermann			image/jpeg X-Content-Type-Options nosniff found			ok
		Cache-Control: public, max-age=31536000, immutable with long duration found.		No Compression - 74252 Bytes
	ETag: "6a4f0272-1220c"
		srcset	/_astro/photo.bDomfrxe_AOT8k.jpg 640w, /_astro/photo.bDomfrxe_wDJCF.jpg 750w, /_astro/photo.bDomfrxe_ZpdS8S.jpg 828w, /_astro/photo.bDomfrxe_Z1cgpdU.jpg 1080w, /_astro/photo.bDomfrxe_AvypV.jpg 1280w			1	ok
							ok
		/_astro/photo.bDomfrxe_AOT8k.jpg 640w			200	1	ok
				image/jpeg X-Content-Type-Options nosniff found			ok
		Cache-Control: public, max-age=31536000, immutable with long duration found.		No Compression - 74252 Bytes
	ETag: "6a4f0272-1220c"
		/_astro/photo.bDomfrxe_wDJCF.jpg 750w			200	1	ok
				image/jpeg X-Content-Type-Options nosniff found			ok
		Cache-Control: public, max-age=31536000, immutable with long duration found.		No Compression - 99038 Bytes
	ETag: "6a4f0272-182de"
		/_astro/photo.bDomfrxe_ZpdS8S.jpg 828w			200	1	ok
				image/jpeg X-Content-Type-Options nosniff found			ok
		Cache-Control: public, max-age=31536000, immutable with long duration found.		No Compression - 117316 Bytes
	ETag: "6a4f0272-1ca44"
		/_astro/photo.bDomfrxe_Z1cgpdU.jpg 1080w			200	1	ok
				image/jpeg X-Content-Type-Options nosniff found			ok
		Cache-Control: public, max-age=31536000, immutable with long duration found.		No Compression - 188888 Bytes
	ETag: "6a4f0272-2e1d8"
		/_astro/photo.bDomfrxe_AvypV.jpg 1280w			200	1	ok
				image/jpeg X-Content-Type-Options nosniff found			ok
		Cache-Control: public, max-age=31536000, immutable with long duration found.		No Compression - 252441 Bytes
	ETag: "6a4f0272-3da19"
	picture
		• source		type: image/webp		1	ok
							ok

		srcset	/_astro/photo.bDomfrxe_1IiPgg.webp 640w, /_astro/photo.bDomfrxe_1E7FKB.webp 750w, /_astro/photo.bDomfrxe_Z1cTQPs.webp 828w, /_astro/photo.bDomfrxe_ZvB1L2.webp 1080w, /_astro/photo.bDomfrxe_1haVRO.webp 1280w			1	ok
							ok
		/_astro/photo.bDomfrxe_1IiPgg.webp 640w			200	1	ok
				image/webp X-Content-Type-Options nosniff found			ok
		Cache-Control: public, max-age=31536000, immutable with long duration found.		No Compression - 51872 Bytes
	ETag: "6a4f0272-caa0"
		/_astro/photo.bDomfrxe_1E7FKB.webp 750w			200	1	ok
				image/webp X-Content-Type-Options nosniff found			ok
		Cache-Control: public, max-age=31536000, immutable with long duration found.		No Compression - 66616 Bytes
	ETag: "6a4f0272-10438"
		/_astro/photo.bDomfrxe_Z1cTQPs.webp 828w			200	1	ok
				image/webp X-Content-Type-Options nosniff found			ok
		Cache-Control: public, max-age=31536000, immutable with long duration found.		No Compression - 77588 Bytes
	ETag: "6a4f0272-12f14"
		/_astro/photo.bDomfrxe_ZvB1L2.webp 1080w			200	1	ok
				image/webp X-Content-Type-Options nosniff found			ok
		Cache-Control: public, max-age=31536000, immutable with long duration found.		No Compression - 120812 Bytes
	ETag: "6a4f0272-1d7ec"
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	style		/_astro/fonts/22d5b0872539c73c.woff2		200	1	ok
				font/woff2 X-Content-Type-Options nosniff found			ok
	Cache-Control: public, max-age=31536000, immutable with long duration found.			No Compression (): 18096/18096 Bytes, font already compressed
	ETag: "6a4f0271-46b0"

	style		/_astro/fonts/5d5b9bdb05fd0cd8.woff2		200	1	ok
				font/woff2 X-Content-Type-Options nosniff found			ok
	Cache-Control: public, max-age=31536000, immutable with long duration found.			No Compression (): 23580/23580 Bytes, font already compressed
	ETag: "6a4f0271-5c1c"

	style		/_astro/fonts/6af1fd35cf5363be.woff2		200	1	ok
				font/woff2 X-Content-Type-Options nosniff found			ok
	Cache-Control: public, max-age=31536000, immutable with long duration found.			No Compression (): 17728/17728 Bytes, font already compressed
	ETag: "6a4f0271-4540"

	style		/_astro/fonts/7622edd1fc8f52c6.woff2		200	1	ok
				font/woff2 X-Content-Type-Options nosniff found			ok
	Cache-Control: public, max-age=31536000, immutable with long duration found.			No Compression (): 18000/18000 Bytes, font already compressed
	ETag: "6a4f0271-4650"

	style		/_astro/fonts/7b82f07f6e29da15.woff2		200	1	ok
				font/woff2 X-Content-Type-Options nosniff found			ok
	Cache-Control: public, max-age=31536000, immutable with long duration found.			No Compression (): 22888/22888 Bytes, font already compressed
	ETag: "6a4f0271-5968"

	style		/_astro/fonts/89db26d2c8edb0b9.woff2		200	1	ok
				font/woff2 X-Content-Type-Options nosniff found			ok
	Cache-Control: public, max-age=31536000, immutable with long duration found.			No Compression (): 23032/23032 Bytes, font already compressed
	ETag: "6a4f0271-59f8"

	style		/_astro/fonts/cd13d88ddef11b42.woff2		200	1	ok
				font/woff2 X-Content-Type-Options nosniff found			ok
	Cache-Control: public, max-age=31536000, immutable with long duration found.			No Compression (): 24408/24408 Bytes, font already compressed
	ETag: "6a4f0271-5f58"

	style		/_astro/fonts/f7f338cff1cf623d.woff2		200	1	ok
				font/woff2 X-Content-Type-Options nosniff found			ok
	Cache-Control: public, max-age=31536000, immutable with long duration found.			No Compression (): 22852/22852 Bytes, font already compressed
	ETag: "6a4f0271-5944"

	style		/_astro/fonts/fca302c0a28f32ff.woff2		200	1	ok
				font/woff2 X-Content-Type-Options nosniff found			ok
	Cache-Control: public, max-age=31536000, immutable with long duration found.			No Compression (): 23040/23040 Bytes, font already compressed
	ETag: "6a4f0271-5a00"

12. Html-Parsing via https://validator.w3.org/nu/

	Type	Message	num found
Url used (first standard-https-result with http status 200): https://ledermann.dev/

Summary
	Good: No non-document-errors
	26 errors
	4 warnings
1.	error	CSS: Parse Error.	20
2.	error	CSS: `view-transition-name`: Property `view-transition-name` doesn't exist.	5
3.	error	Element `div` not allowed as child of element `span` in this context. (Suppressing further errors from this subtree.)	1
4.	warning	Section lacks heading. Consider using `h2`-`h6` elements to add identifying headings to all sections, or else use a `div` element instead for any cases where no heading is needed.	4
Details
	Type	Message + Sample
1	error	CSS: `view-transition-name`: Property `view-transition-name` doesn't exist.
		From line 12, column 10691 to line 12, column 10701
		ion-name: nav-wrapper; }@la
2	error	CSS: Parse Error.
		From line 12, column 10753 to line 12, column 10753
		old(nav-wrapper) { animation
3	error	CSS: Parse Error.
		From line 16, column 66 to line 16, column 66
		new(nav-wrapper) { animation
4	error	CSS: Parse Error.
		From line 20, column 93 to line 20, column 93
		old(nav-wrapper) { animation
5	error	CSS: Parse Error.
		From line 24, column 94 to line 24, column 94
		new(nav-wrapper) { animation
6	error	CSS: `view-transition-name`: Property `view-transition-name` doesn't exist.
		From line 48, column 120 to line 48, column 127
		ion-name: main-nav; }@la
7	error	CSS: Parse Error.
		From line 48, column 176 to line 48, column 176
		on-old(main-nav) { animation
8	error	CSS: Parse Error.
		From line 52, column 63 to line 52, column 63
		on-new(main-nav) { animation
9	error	CSS: Parse Error.
		From line 56, column 90 to line 56, column 90
		on-old(main-nav) { animation
10	error	CSS: Parse Error.
		From line 60, column 91 to line 60, column 91
		on-new(main-nav) { animation
11	error	CSS: `view-transition-name`: Property `view-transition-name` doesn't exist.
		From line 84, column 120 to line 84, column 129
		ion-name: page-title; }@la
12	error	CSS: Parse Error.
		From line 84, column 180 to line 84, column 180
		-old(page-title) { animation
13	error	CSS: Parse Error.
		From line 88, column 65 to line 88, column 65
		-new(page-title) { animation
14	error	CSS: Parse Error.
		From line 92, column 92 to line 92, column 92
		-old(page-title) { animation
15	error	CSS: Parse Error.
		From line 96, column 93 to line 96, column 93
		-new(page-title) { animation
16	error	CSS: `view-transition-name`: Property `view-transition-name` doesn't exist.
		From line 120, column 120 to line 120, column 132
		ion-name: page-subtitle; }@la
17	error	CSS: Parse Error.
		From line 120, column 186 to line 120, column 186
		d(page-subtitle) { animation
18	error	CSS: Parse Error.
		From line 124, column 68 to line 124, column 68
		w(page-subtitle) { animation
19	error	CSS: Parse Error.
		From line 128, column 95 to line 128, column 95
		d(page-subtitle) { animation
20	error	CSS: Parse Error.
		From line 132, column 96 to line 132, column 96
		w(page-subtitle) { animation
21	error	CSS: `view-transition-name`: Property `view-transition-name` doesn't exist.
		From line 156, column 120 to line 156, column 129
		ion-name: sticky-nav; }@la
22	error	CSS: Parse Error.
		From line 156, column 180 to line 156, column 180
		-old(sticky-nav) { animation
23	error	CSS: Parse Error.
		From line 160, column 65 to line 160, column 65
		-new(sticky-nav) { animation
24	error	CSS: Parse Error.
		From line 164, column 92 to line 164, column 92
		-old(sticky-nav) { animation
25	error	CSS: Parse Error.
		From line 168, column 93 to line 168, column 93
		-new(sticky-nav) { animation
26	error	Element `div` not allowed as child of element `span` in this context. (Suppressing further errors from this subtree.)
		From line 228, column 119 to line 228, column 152
		lectrus"> <div class="spinner inline-block"> <div
27	warning	Section lacks heading. Consider using `h2`-`h6` elements to add identifying headings to all sections, or else use a `div` element instead for any cases where no heading is needed.
		From line 199, column 6921 to line 199, column 6975
		/section> <section class="px-6 py-20 md:px-10 md:py-28 bg-paper"> <div
28	warning	Section lacks heading. Consider using `h2`-`h6` elements to add identifying headings to all sections, or else use a `div` element instead for any cases where no heading is needed.
		From line 212, column 124 to line 212, column 180
		/section> <section class="px-6 py-20 md:px-10 md:py-28 bg-paper-2"> <div
29	warning	Section lacks heading. Consider using `h2`-`h6` elements to add identifying headings to all sections, or else use a `div` element instead for any cases where no heading is needed.
		From line 246, column 39 to line 246, column 95
		/section> <section class="px-6 py-20 md:px-10 md:py-28 bg-paper-2"> <div
30	warning	Section lacks heading. Consider using `h2`-`h6` elements to add identifying headings to all sections, or else use a `div` element instead for any cases where no heading is needed.
		From line 259, column 3375 to line 259, column 3451
		500"></p> <section id="results" class="h-[60vh] overflow-y-auto px-4 py-4 sm:h-[30vh]"></sect

13. Nameserver - IP-Adresses

Required Root-climbing DNS-Queries to find ip addresses of all Name Servers: ns1.gandi.net, ns-141-a.gandi.net, ns-73-b.gandi.net, ns-76-c.gandi.net

QNr.	Domain	Type	NS used
1	net	NS	f.root-servers.net (2001:500:2f::f)
	Answer: a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net, e.gtld-servers.net, f.gtld-servers.net, g.gtld-servers.net, h.gtld-servers.net, i.gtld-servers.net, j.gtld-servers.net, k.gtld-servers.net, l.gtld-servers.net, m.gtld-servers.net
2	ns1.gandi.net	NS	a.gtld-servers.net (2001:503:a83e::2:30)
	Answer: dns0.gandi.net, dns1.gandi.net, dns2.gandi.net, dns3.gandi.net, dns4.gandi.net, dns6.gandi.net, e.gandi-ns.fr
	Answer: dns0.gandi.net 2001:4b98:d:1::39, 217.70.177.39
	Answer: dns1.gandi.net 2001:4b98:d:1::45, 217.70.177.45
	Answer: dns2.gandi.net 2001:4b98:d:589::211, 217.70.183.211
	Answer: dns3.gandi.net 2001:4b98:c:13::14, 217.70.184.14
	Answer: dns4.gandi.net 2001:4b98:dc2:90:217:70:186:184, 217.70.186.184
	Answer: dns6.gandi.net 162.159.24.111, 162.159.25.213, 2400:cb00:2049:1::a29f:186f, 2400:cb00:2049:1::a29f:19d5
3	ns-141-a.gandi.net	NS	a.gtld-servers.net (2001:503:a83e::2:30)
	Answer: dns0.gandi.net, dns1.gandi.net, dns2.gandi.net, dns3.gandi.net, dns4.gandi.net, dns6.gandi.net, e.gandi-ns.fr
	Answer: dns0.gandi.net 2001:4b98:d:1::39, 217.70.177.39
	Answer: dns1.gandi.net 2001:4b98:d:1::45, 217.70.177.45
	Answer: dns2.gandi.net 2001:4b98:d:589::211, 217.70.183.211
	Answer: dns3.gandi.net 2001:4b98:c:13::14, 217.70.184.14
	Answer: dns4.gandi.net 2001:4b98:dc2:90:217:70:186:184, 217.70.186.184
	Answer: dns6.gandi.net 162.159.24.111, 162.159.25.213, 2400:cb00:2049:1::a29f:186f, 2400:cb00:2049:1::a29f:19d5
4	ns-73-b.gandi.net	NS	a.gtld-servers.net (2001:503:a83e::2:30)
	Answer: dns0.gandi.net, dns1.gandi.net, dns2.gandi.net, dns3.gandi.net, dns4.gandi.net, dns6.gandi.net, e.gandi-ns.fr
	Answer: dns0.gandi.net 2001:4b98:d:1::39, 217.70.177.39
	Answer: dns1.gandi.net 2001:4b98:d:1::45, 217.70.177.45
	Answer: dns2.gandi.net 2001:4b98:d:589::211, 217.70.183.211
	Answer: dns3.gandi.net 2001:4b98:c:13::14, 217.70.184.14
	Answer: dns4.gandi.net 2001:4b98:dc2:90:217:70:186:184, 217.70.186.184
	Answer: dns6.gandi.net 162.159.24.111, 162.159.25.213, 2400:cb00:2049:1::a29f:186f, 2400:cb00:2049:1::a29f:19d5
5	ns-76-c.gandi.net	NS	a.gtld-servers.net (2001:503:a83e::2:30)
	Answer: dns0.gandi.net, dns1.gandi.net, dns2.gandi.net, dns3.gandi.net, dns4.gandi.net, dns6.gandi.net, e.gandi-ns.fr
	Answer: dns0.gandi.net 2001:4b98:d:1::39, 217.70.177.39
	Answer: dns1.gandi.net 2001:4b98:d:1::45, 217.70.177.45
	Answer: dns2.gandi.net 2001:4b98:d:589::211, 217.70.183.211
	Answer: dns3.gandi.net 2001:4b98:c:13::14, 217.70.184.14
	Answer: dns4.gandi.net 2001:4b98:dc2:90:217:70:186:184, 217.70.186.184
	Answer: dns6.gandi.net 162.159.24.111, 162.159.25.213, 2400:cb00:2049:1::a29f:186f, 2400:cb00:2049:1::a29f:19d5
6	fr	NS	m.root-servers.net (2001:dc3::35)
	Answer: d.nic.fr, f.ext.nic.fr, g.ext.nic.fr
7	e.gandi-ns.fr: 2001:4b98:d:1::1, 217.70.177.33	NS	f.ext.nic.fr (2001:67c:1010:11::53)
8	f.gandi-ns.net: 2001:4b98:d:589::1, 217.70.183.209	NS	a.gtld-servers.net (2001:503:a83e::2:30)
	Answer: dns0.gandi.net 2001:4b98:d:1::39, 217.70.177.39
	Answer: dns3.gandi.net 2001:4b98:c:13::14, 217.70.184.14
	Answer: dns6.gandi.net 162.159.24.111, 162.159.25.213, 2400:cb00:2049:1::a29f:186f, 2400:cb00:2049:1::a29f:19d5
9	eu	NS	k.root-servers.net (2001:7fd::1)
	Answer: be.dns.eu, si.dns.eu, w.dns.eu, x.dns.eu, y.dns.eu
10	g.gandi-ns.eu: 173.246.97.3, 2001:4b98:6::4	NS	si.dns.eu (2001:1470:8000:100::62)
11	ns1.gandi.net: 173.246.100.2	A	dns0.gandi.net (2001:4b98:d:1::39)
12	ns1.gandi.net: 2001:4b98:aaaa::2	AAAA	dns0.gandi.net (2001:4b98:d:1::39)
13	ns-141-a.gandi.net: 173.246.100.142	A	dns0.gandi.net (2001:4b98:d:1::39)
14	ns-141-a.gandi.net: 2001:4b98:aaaa::8e	AAAA	dns0.gandi.net (2001:4b98:d:1::39)
15	ns-73-b.gandi.net: 213.167.230.74	A	dns0.gandi.net (2001:4b98:d:1::39)
16	ns-73-b.gandi.net: 2001:4b98:aaab::4a	AAAA	dns0.gandi.net (2001:4b98:d:1::39)
17	ns-76-c.gandi.net: 217.70.187.77	A	dns0.gandi.net (2001:4b98:d:1::39)
18	ns-76-c.gandi.net: 2604:3400:aaac::4d	AAAA	dns0.gandi.net (2001:4b98:d:1::39)

14. CAA - Entries

Domainname	flag	Name	Value	∑ Queries
www.ledermann.dev	5	issue	letsencrypt.org	1
ledermann.dev	5	issue	letsencrypt.org	1
	9	issuewild	letsencrypt.org	1
dev	0		no CAA entry found	1

15. TXT - Entries

Domainname	TXT Entry	Status	∑ Queries
ledermann.dev	brevo-code:37d9b1c8901bd46bee2f3f10b29ed9e3	ok	1
ledermann.dev	google-site-verification=vN-zWPC5_zEJn-WX_9OxfpmxGjKT9w-ALtYwCI8sIaI	ok	1
ledermann.dev	v=spf1 include:_mailcust.gandi.net ?all	ok	1
www.ledermann.dev		ok	1
_acme-challenge.ledermann.dev		missing entry or wrong length	1
_acme-challenge.www.ledermann.dev		Name Error - The domain name does not exist	1
_acme-challenge.ledermann.dev.ledermann.dev		perhaps wrong	1
_acme-challenge.www.ledermann.dev.ledermann.dev		perhaps wrong	1
_acme-challenge.www.ledermann.dev.www.ledermann.dev		Name Error - The domain name does not exist	1

16. DomainService - Entries

Type		Domain	Pref	Value	DNS-error	num Answers	Status
MX		ledermann.dev	10	spool.mail.gandi.net	0	2	ok
	A			217.70.178.1	0	1	ok
	AAAA			2001:4b98:e00::1	0	1	ok
	CNAME				0	0	ok
MX		ledermann.dev	50	fb.mail.gandi.net	0	2	ok
	A			217.70.178.215	0	3	ok
	A			217.70.178.216	0	3	ok
	A			217.70.178.217	0	3	ok
	AAAA			2001:4b98:dc4:8::216	0	3	ok
	AAAA			2001:4b98:dc4:8::217	0	3	ok
	AAAA			2001:4b98:dc4:8::215	0	3	ok
	CNAME				0	0	ok
SPF	TXT	ledermann.dev		v=spf1 include:_mailcust.gandi.net ?all			ok
	TXT	_mailcust.gandi.net		v=spf1 include:_nblcust.gandi.net ?all			ok
	TXT	_nblcust.gandi.net		v=spf1 ip4:217.70.178.192/26 ip6:2001:4b98:dc4:8::/64 ip4:217.70.183.192/28 ip4:217.70.182.72/32 ip4:217.70.182.74/32 ?all			ok

17. Cipher Suites

Summary
Domain	IP	Port	num Ciphers	time	Std.Protocol	Forward Secrecy
ledermann.dev	116.203.125.190	443	3 Ciphers	29.60 sec		0 without, 3 FS	100.00 %
ledermann.dev	2a01:4f8:c2c:2088::1	443	3 Ciphers	24.41 sec		0 without, 3 FS	100.00 %
www.ledermann.dev	116.203.125.190	443	3 Ciphers	29.73 sec		0 without, 3 FS	100.00 %
www.ledermann.dev	2a01:4f8:c2c:2088::1	443	3 Ciphers	25.14 sec		0 without, 3 FS	100.00 %
Complete		4	12 Ciphers 3.00 Ciphers/Check	108.88 sec	27.22 sec/Check	0 without, 12 FS	100.00 %

Details
Domain	IP	Port	Cipher (OpenSsl / IANA)
ledermann.dev	116.203.125.190	443	ECDHE-RSA-CHACHA20-POLY1305		(Secure)	TLSv1.2	0xCC,0xA8	FS
3 Ciphers, 29.60 sec			TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
			ECDH		RSA	CHACHA20/POLY1305(256)	AEAD
			ECDHE-RSA-AES256-GCM-SHA384		(Secure)	TLSv1.2	0xC0,0x30	FS
			TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
			ECDH		RSA	AESGCM(256)	AEAD
			ECDHE-RSA-AES128-GCM-SHA256		(Secure)	TLSv1.2	0xC0,0x2F	FS
			TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
			ECDH		RSA	AESGCM(128)	AEAD
	2a01:4f8:c2c:2088::1	443	ECDHE-RSA-CHACHA20-POLY1305		(Secure)	TLSv1.2	0xCC,0xA8	FS
3 Ciphers, 24.41 sec			TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
			ECDH		RSA	CHACHA20/POLY1305(256)	AEAD
			ECDHE-RSA-AES256-GCM-SHA384		(Secure)	TLSv1.2	0xC0,0x30	FS
			TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
			ECDH		RSA	AESGCM(256)	AEAD
			ECDHE-RSA-AES128-GCM-SHA256		(Secure)	TLSv1.2	0xC0,0x2F	FS
			TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
			ECDH		RSA	AESGCM(128)	AEAD
www.ledermann.dev	116.203.125.190	443	ECDHE-RSA-CHACHA20-POLY1305		(Secure)	TLSv1.2	0xCC,0xA8	FS
3 Ciphers, 29.73 sec			TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
			ECDH		RSA	CHACHA20/POLY1305(256)	AEAD
			ECDHE-RSA-AES256-GCM-SHA384		(Secure)	TLSv1.2	0xC0,0x30	FS
			TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
			ECDH		RSA	AESGCM(256)	AEAD
			ECDHE-RSA-AES128-GCM-SHA256		(Secure)	TLSv1.2	0xC0,0x2F	FS
			TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
			ECDH		RSA	AESGCM(128)	AEAD
	2a01:4f8:c2c:2088::1	443	ECDHE-RSA-CHACHA20-POLY1305		(Secure)	TLSv1.2	0xCC,0xA8	FS
3 Ciphers, 25.14 sec			TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
			ECDH		RSA	CHACHA20/POLY1305(256)	AEAD
			ECDHE-RSA-AES256-GCM-SHA384		(Secure)	TLSv1.2	0xC0,0x30	FS
			TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
			ECDH		RSA	AESGCM(256)	AEAD
			ECDHE-RSA-AES128-GCM-SHA256		(Secure)	TLSv1.2	0xC0,0x2F	FS
			TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
			ECDH		RSA	AESGCM(128)	AEAD

18. Portchecks

No open Ports <> 80 / 443 found, so no additional Ports checked.

Permalink: https://check-your-website.server-daten.de/?i=ae21426f-e7fc-46e1-bf4f-1786bd5e4ba5

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Check DNS, Urls + Redirects, Certificates and Content of your Website

Older results

1. IP-Addresses

2. DNSSEC

3. Name Servers

4. SOA-Entries

5. Screenshots

Mobile- and other Chrome-Checks

6. Url-Checks

7. Comments

1. General Results, most used to calculate the result

2. Header-Checks

3. DNS- and NameServer - Checks

4. Content- and Performance-critical Checks

8. Connections

9. Certificates

10. Last Certificates - Certificate Transparency Log Check

1. Source CertSpotter - active certificates (one check per day)

2. Source crt.sh - old and new certificates, sometimes very slow - only certificates with "not after" > of the last months are listed

11. Html-Content - Entries

Summary

Details (currently limited to 500 rows - some problems with spam users)

12. Html-Parsing via https://validator.w3.org/nu/

Summary

Details

13. Nameserver - IP-Adresses

14. CAA - Entries

15. TXT - Entries

16. DomainService - Entries

17. Cipher Suites

18. Portchecks