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


 

 

 

1. IP-Addresses

HostTypeIP-Addressis 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






3 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






1 RRSIG RR to validate DNSKEY RR found






RRSIG-Owner (root), Algorithm: 8, 0 Labels, original TTL: 172800 sec, Signature-expiration: 01.06.2026, 00:00:00 +, Signature-Inception: 11.05.2026, 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: 29.05.2026, 05:00:00 +, Signature-Inception: 16.05.2026, 04:00:00 +, KeyTag 54393, Signer-Name: (root)






Status: Good - Algorithmus 8 and DNSKEY with KeyTag 54393 used to validate the DS RRSet in the parent zone






2 DNSKEY RR found






Public Key with Algorithm 8, KeyTag 56019, 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: 03.06.2026, 21:21:01 +, Signature-Inception: 12.05.2026, 21:21:01 +, 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: 03.06.2026, 21:21:01 +, Signature-Inception: 12.05.2026, 21:21:01 +, KeyTag 56019, Signer-Name: dev






Status: Good - Algorithmus 8 and DNSKEY with KeyTag 56019 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: 28.05.2026, 00:00:00 +, Signature-Inception: 07.05.2026, 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: 28.05.2026, 00:00:00 +, Signature-Inception: 07.05.2026, 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: 28.05.2026, 00:00:00 +, Signature-Inception: 07.05.2026, 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: 28.05.2026, 00:00:00 +, Signature-Inception: 07.05.2026, 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: 28.05.2026, 00:00:00 +, Signature-Inception: 07.05.2026, 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: 28.05.2026, 00:00:00 +, Signature-Inception: 07.05.2026, 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: 28.05.2026, 00:00:00 +, Signature-Inception: 07.05.2026, 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: 28.05.2026, 00:00:00 +, Signature-Inception: 07.05.2026, 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: 28.05.2026, 00:00:00 +, Signature-Inception: 07.05.2026, 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: 28.05.2026, 00:00:00 +, Signature-Inception: 07.05.2026, 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: 28.05.2026, 00:00:00 +, Signature-Inception: 07.05.2026, 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: 28.05.2026, 00:00:00 +, Signature-Inception: 07.05.2026, 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: 28.05.2026, 00:00:00 +, Signature-Inception: 07.05.2026, 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: 28.05.2026, 00:00:00 +, Signature-Inception: 07.05.2026, 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: 28.05.2026, 00:00:00 +, Signature-Inception: 07.05.2026, 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: 28.05.2026, 00:00:00 +, Signature-Inception: 07.05.2026, 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: 28.05.2026, 00:00:00 +, Signature-Inception: 07.05.2026, 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: 28.05.2026, 00:00:00 +, Signature-Inception: 07.05.2026, 00:00:00 +, KeyTag 20081, Signer-Name: ledermann.dev






Status: Good. NXDomain-Proof required and found.

 

3. Name Servers

DomainNameserverNS-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:DD 74 D3 3D FF 3D F3 F0 DE C9 B2 E2 AD ED 1F FC


  ns-tld2.charlestonroadregistry.com / hex:12 AE 60 9E 3B 41 09 80 DB 12 70 FA 9B 46 3E E7


  ns-tld3.charlestonroadregistry.com / hex:0D 0E BB 68 0B E6 75 30 20 39 C0 30 A5 19 C6 7B


  ns-tld4.charlestonroadregistry.com / hex:45 FF 48 47 59 F6 EB 80 FA 17 39 14 42 5F A8 84


  ns-tld5.charlestonroadregistry.com / hex:A1 1C 87 04 61 47 D3 D2 73 11 F5 AF 49 F6 2A FC

 

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:1778716800
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 2026-05-16 12:23:28 +00:0

 

Mobil (412px x 732px)

 

797 milliseconds

 

Screenshot mobile - https://ledermann.dev/
Mobil + Landscape (732px x 412px)

 

783 milliseconds

 

Screenshot mobile landscape - https://ledermann.dev/
Screen (1280px x 1680px)

 

846 milliseconds

 

Screenshot Desktop - https://ledermann.dev/

 

Mobile- and other Chrome-Checks


widthheight
visual Viewport397732
content Size3973533

 

Good: No horizontal scrollbar. Content-size width = visual Viewport width.

 

6. Url-Checks


:

:
DomainnameHttp-StatusredirectSec.G
• http://ledermann.dev/
116.203.125.190
301
https://ledermann.dev/
Html is minified: 100.00 %
0.030
A
Location: https://ledermann.dev/
Date: Sat, 16 May 2026 10:20:34 GMT
Content-Length: 17

• http://ledermann.dev/
2a01:4f8:c2c:2088::1
301
https://ledermann.dev/
Html is minified: 100.00 %
0.046
A
Location: https://ledermann.dev/
Date: Sat, 16 May 2026 10:20:34 GMT
Content-Length: 17

• http://www.ledermann.dev/
116.203.125.190
301
https://www.ledermann.dev/
Html is minified: 100.00 %
0.030
A
Location: https://www.ledermann.dev/
Date: Sat, 16 May 2026 10:20:35 GMT
Content-Length: 17

• http://www.ledermann.dev/
2a01:4f8:c2c:2088::1
301
https://www.ledermann.dev/
Html is minified: 100.00 %
0.034
A
Location: https://www.ledermann.dev/
Date: Sat, 16 May 2026 10:20:35 GMT
Content-Length: 17

• https://www.ledermann.dev/
116.203.125.190
301
https://ledermann.dev/
Html is minified: 109.46 %
2.186
A
Alt-Svc: h3=":443"; ma=2592000
Date: Sat, 16 May 2026 10:20:41 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 %
2.000
A
Alt-Svc: h3=":443"; ma=2592000
Date: Sat, 16 May 2026 10:20:44 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 - 11425 / 50799 - 77.51 %
Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 8/18864
200

Html is minified: 160.74 %
Other inline scripts (∑/total): 1/406
2.203
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' 'report-sample'; base-uri 'self'; form-action 'none'; frame-ancestors 'none'; upgrade-insecure-requests
Date: Sat, 16 May 2026 10:20:35 GMT
ETag: W/"6a0680d0-c66f"
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, 16 May 2026 10:23:35 GMT
Last-Modified: Fri, 15 May 2026 02:11:28 GMT
Content-Length: 11425

• https://ledermann.dev/
2a01:4f8:c2c:2088::1 gzip used - 11425 / 50799 - 77.51 %
Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 8/18864
200

Html is minified: 160.74 %
Other inline scripts (∑/total): 1/406
2.063
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' 'report-sample'; base-uri 'self'; form-action 'none'; frame-ancestors 'none'; upgrade-insecure-requests
Date: Sat, 16 May 2026 10:20:38 GMT
ETag: W/"6a0680d0-c66f"
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, 16 May 2026 10:23:38 GMT
Last-Modified: Fri, 15 May 2026 02:11:28 GMT
Content-Length: 11425

• http://ledermann.dev/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
116.203.125.190
404


0.017
A
Not Found
Visible Content:
Date: Sat, 16 May 2026 10:20:47 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


0.030
A
Not Found
Visible Content:
Date: Sat, 16 May 2026 10:20:47 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


0.014
A
Not Found
Visible Content:
Date: Sat, 16 May 2026 10:20:47 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


0.034
A
Not Found
Visible Content:
Date: Sat, 16 May 2026 10:20:47 GMT
Content-Length: 0

• https://116.203.125.190/
116.203.125.190
-103


0.047
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


0.046
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

Aname "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)
AGood: All ip addresses are public addresses
AGood: Minimal 2 ip addresses per domain name found: ledermann.dev has 2 different ip addresses (authoritative).
AGood: Minimal 2 ip addresses per domain name found: www.ledermann.dev has 2 different ip addresses (authoritative).
AGood: Ipv4 and Ipv6 addresses per domain name found: ledermann.dev has 1 ipv4, 1 ipv6 addresses
AGood: Ipv4 and Ipv6 addresses per domain name found: www.ledermann.dev has 1 ipv4, 1 ipv6 addresses
AGood: No asked Authoritative Name Server had a timeout
AGood: destination is https
AGood - only one version with Http-Status 200
AGood: one preferred version: non-www is preferred
AGood: No cookie sent via http.
AGood: HSTS has preload directive
AExcellent: Domain is in the Google-Preload-List
AExcellent: Domain is in the Mozilla/Firefox-Preload-List
AHSTS-Preload-Status: Preloaded. Check https://hstspreload.org/ to learn some basics about the Google-Preload-List.
Ahttp://ledermann.dev/ 116.203.125.190
301
https://ledermann.dev/
Correct redirect http - https with the same domain name
Ahttp://ledermann.dev/ 2a01:4f8:c2c:2088::1
301
https://ledermann.dev/
Correct redirect http - https with the same domain name
Ahttp://www.ledermann.dev/ 116.203.125.190
301
https://www.ledermann.dev/
Correct redirect http - https with the same domain name
Ahttp://www.ledermann.dev/ 2a01:4f8:c2c:2088::1
301
https://www.ledermann.dev/
Correct redirect http - https with the same domain name
AGood: 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.
AGood: 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.
BNo _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

Aledermann.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' '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
Aledermann.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' '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
Bledermann.dev 116.203.125.190
Cross-Origin-Embedder-Policy
Info: Missing Header
Bledermann.dev 116.203.125.190
Cross-Origin-Opener-Policy
Info: Missing Header
Bledermann.dev 116.203.125.190
Cross-Origin-Resource-Policy
Info: Missing Header
Bledermann.dev 2a01:4f8:c2c:2088::1
Cross-Origin-Embedder-Policy
Info: Missing Header
Bledermann.dev 2a01:4f8:c2c:2088::1
Cross-Origin-Opener-Policy
Info: Missing Header
Bledermann.dev 2a01:4f8:c2c:2088::1
Cross-Origin-Resource-Policy
Info: Missing Header

3. DNS- and NameServer - Checks

AInfo:: 18 Root-climbing DNS Queries required to find all IPv4- and IPv6-Addresses of 4 Name Servers.
AInfo:: 18 Queries complete, 18 with IPv6, 0 with IPv4.
AGood: 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.
AInfo:: 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.
AGood: Only one SOA.Primary Name Server found.: ns1.gandi.net.
Error: SOA.Primary Name Server not included in the delegation set.: ns1.gandi.net.
AGood: 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
AGood: All Name Server Domain Names have a Public Suffix.
AGood: All Name Server Domain Names ending with a Public Suffix have minimal one IPv4- or IPv6 address.
AGood: All Name Server ip addresses are public.
AGood: Minimal 2 different name servers (public suffix and public ip address) found: 4 different Name Servers found
AGood: 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
AInfo: 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.
AGood: Name Server IPv4-addresses from different subnet found:
AInfo: 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:
AGood: Name Server IPv6 addresses from different subnets found.
AGood: Nameserver supports TCP connections: 8 good Nameserver
AGood: Nameserver supports Echo Capitalization: 8 good Nameserver
AGood: Nameserver supports EDNS with max. 512 Byte Udp payload, message is smaller: 8 good Nameserver
AGood: 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.
AGood: All SOA have the same Serial Number
AGood: CAA entries found, creating certificate is limited: letsencrypt.org is allowed to create certificates
AGood: CAA entries found, creating certificate is limited: letsencrypt.org is allowed to create wildcard-certificates

4. Content- and Performance-critical Checks

AGood: 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.
AGood: 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.
AGood: 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.: 7 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.: 7 script elements without defer/async.
AGood: All CSS / JavaScript files are sent compressed (gzip, deflate, br checked). That reduces the content of the files. 8 external CSS / JavaScript files found
AGood: 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
AGood: 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. 18 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.
AGood: All checked attribute values are enclosed in quotation marks (" or ').
AGood: All img-elements have a valid alt-attribute.: 4 img-elements found.
AGood: 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
ADuration: 224067 milliseconds, 224.067 seconds

 

8. Connections

DomainIPPortCert.ProtocolKeyExchangeStrengthCipherStrengthHashAlgorithmOCSP stapling
Domain/KeyExchangeIP/StrengthPort/CipherCert./StrengthProtocol/HashAlgorithmOCSP stapling
ledermann.dev
116.203.125.190
443
ok
Tls12
ECDH Ephermal
256
Aes128
128
Sha256
not supported
ok
ledermann.dev
116.203.125.190
443
ok
Tls12

ECDH Ephermal
256
Aes128
128
Sha256
not supported
ok
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)

1CN=ledermann.dev


2CN=R13, O=Let's Encrypt, C=US


ledermann.dev
2a01:4f8:c2c:2088::1
443
ok
Tls12
ECDH Ephermal
256
Aes128
128
Sha256
not supported
ok

ledermann.dev
2a01:4f8:c2c:2088::1
443
ok
Tls12

ECDH Ephermal
256
Aes128
128
Sha256
not supported
ok
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)

1CN=ledermann.dev


2CN=R13, O=Let's Encrypt, C=US


www.ledermann.dev
116.203.125.190
443
ok
Tls12
ECDH Ephermal
256
Aes128
128
Sha256
not supported
ok

www.ledermann.dev
116.203.125.190
443
ok
Tls12

ECDH Ephermal
256
Aes128
128
Sha256
not supported
ok
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)

1CN=ledermann.dev


2CN=R13, O=Let's Encrypt, C=US


www.ledermann.dev
2a01:4f8:c2c:2088::1
443
ok
Tls12
ECDH Ephermal
256
Aes128
128
Sha256
not supported
ok

www.ledermann.dev
2a01:4f8:c2c:2088::1
443
ok
Tls12

ECDH Ephermal
256
Aes128
128
Sha256
not supported
ok
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)

1CN=ledermann.dev


2CN=R13, O=Let's Encrypt, C=US

 

9. Certificates

1.
1.
CN=ledermann.dev
18.03.2026
16.06.2026
expires in 30 days
ledermann.dev, www.ledermann.dev - 2 entries
1.
1.
CN=ledermann.dev
18.03.2026

16.06.2026
expires in 30 days


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

KeyalgorithmRSA encryption (4096 bit)
Signatur:SHA256 With RSA-Encryption
Serial Number:0546D45CA2AA97C98C6569886F32B88C45FD
Thumbprint:F49171BAD439DC4166CB766675A8C6A63366D979
SHA256 / Certificate:ELF56ursjsgIPZ7xpcTs6vL4LJ4QlVPIky7pQz3Ar6Y=
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)




2.
CN=R13, O=Let's Encrypt, C=US
13.03.2024
13.03.2027
expires in 300 days


2.
CN=R13, O=Let's Encrypt, C=US
13.03.2024

13.03.2027
expires in 300 days




KeyalgorithmRSA 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)




3.
CN=ISRG Root X1, O=Internet Security Research Group, C=US
04.06.2015
04.06.2035
expires in 3305 days


3.
CN=ISRG Root X1, O=Internet Security Research Group, C=US
04.06.2015

04.06.2035
expires in 3305 days




KeyalgorithmRSA 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)

Issuerlast 7 daysactivenum Certs
CN=R3, O=Let's Encrypt, C=US
0
0
5
CN=R11, O=Let's Encrypt, C=US
0
0
5
CN=R12, O=Let's Encrypt, C=US
0
0
2
CN=R13, O=Let's Encrypt, C=US
0
1
1

CertSpotter-IdIssuernot beforenot afterDomain namesLE-Duplicatenext LE
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

Issuerlast 7 daysactivenum 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-IdIssuernot beforenot afterDomain namesLE-Duplicatenext 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)
DomainnameHtmlElementrel/property∑ size∑ problems∑ int.∑ ext.∑ Origin poss.∑ SRI ParseErrors∑ SRI valid∑ SRI missing
https://ledermann.dev/
116.203.125.190
a

26

0


0
0
0


img

2
103,744 Bytes
0
12
0
0
0
0


link
alternate
1

0


0
0
0


link
stylesheet
2
11,727 Bytes
0
2
0
0
0
0


link
other
17
163,298 Bytes
0
12
0
0
0
0


meta
twitter
3

0


0
0
0


meta
og
9
2,290,540 Bytes
0
2
0
0
0
0


meta
other
11

0


0
0
0


script

7
24,693 Bytes
0
7
0
0
0
0


style

8
161,360 Bytes
0
8
0
0
0
0

https://ledermann.dev/
2a01:4f8:c2c:2088::1
a

26

0


0
0
0


img

2
103,744 Bytes
0
12
0
0
0
0


link
alternate
1

0


0
0
0


link
stylesheet
2
11,727 Bytes
0
2
0
0
0
0


link
other
17
163,298 Bytes
0
12
0
0
0
0


meta
og
9
2,290,540 Bytes
0
2
0
0
0
0


meta
twitter
3

0


0
0
0


meta
other
11

0


0
0
0


script

7
24,693 Bytes
0
7
0
0
0
0


style

8
161,360 Bytes
0
8
0
0
0
0

 

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

DomainnameHtml-Elementname/equiv/ property/relhref/src/contentHttpStatusmsgStatus
https://ledermann.dev/
116.203.125.190
a

#content


1
ok















a

/


2
ok















a

/blog/


2
ok















a

/datenschutz/


1
ok















a

/kontakt/


5
ok















a

/projekte/


3
ok















a

https://bsky.app/profile/ledermann.dev


2
ok















a

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


1
ok















a

https://github.com/ledermann


2
ok















a

https://mastodon.social/@ledermann


2
ok















a

https://wakatime.com/@ledermann


1
ok















a

https://www.linkedin.com/in/ledermann/


2
ok















a

https://www.xing.com/profile/Georg_Ledermann


2
ok















img
src
/_astro/photo.bDomfrxe_1IiPgg.webp
200

2
ok
alt: Georg Ledermannimage/webp
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression - 51872 Bytes






ETag: "6a0680d0-caa0"


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


2
ok







/_astro/photo.bDomfrxe_1IiPgg.webp 640w
200

2
ok
image/webp
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression - 51872 Bytes






ETag: "6a0680d0-caa0"


/_astro/photo.bDomfrxe_1E7FKB.webp 750w
200

2
ok
image/webp
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression - 66616 Bytes






ETag: "6a0680d0-10438"


/_astro/photo.bDomfrxe_Z1cTQPs.webp 828w
200

2
ok
image/webp
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression - 77588 Bytes






ETag: "6a0680d0-12f14"


/_astro/photo.bDomfrxe_ZvB1L2.webp 1080w
200

2
ok
image/webp
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression - 120812 Bytes






ETag: "6a0680d0-1d7ec"


/_astro/photo.bDomfrxe_1haVRO.webp 1280w
200

2
ok
image/webp
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression - 154774 Bytes






ETag: "6a0680d0-25c96"

link
alternate
/feed.xml


1
ok















link
apple-touch-icon
/apple-touch-icon.png
200

1
ok
image/png
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression - 812 Bytes






ETag: "6a0680cf-32c"



link
canonical
https://ledermann.dev/


1
ok















link
icon
/favicon-16x16.png
200

1
ok
image/png
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression - 250 Bytes






ETag: "6a0680cf-fa"



link
icon
/favicon-32x32.png
200

1
ok
image/png
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression - 328 Bytes






ETag: "6a0680cf-148"



link
manifest
/manifest.webmanifest


1
ok















link
mask-icon
/safari-pinned-tab.svg
200

1
ok
image/svg+xml; charset=utf-8
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
Wrong Compression (gzip): 548/872 Bytes






ETag: W/"6a0680cf-368"



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


1
ok















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


1
ok















link
me
https://x.com/ledermann


1
ok















link
preload
/_astro/fonts/0d0b282e448a3b80.woff2
200

1
ok
font/woff2
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression (): 23236/23236 Bytes, font already compressed






ETag: "6a0680cf-5ac4"



link
preload
/_astro/fonts/13fe8016e8ea5d6c.woff2
200

1
ok
font/woff2
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression (): 24448/24448 Bytes, font already compressed






ETag: "6a0680cf-5f80"



link
preload
/_astro/fonts/432bc10cb95a76c4.woff2
200

1
ok
font/woff2
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression (): 12248/12248 Bytes, font already compressed






ETag: "6a0680cf-2fd8"



link
preload
/_astro/fonts/5d5b9bdb05fd0cd8.woff2
200

1
ok
font/woff2
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression (): 23580/23580 Bytes, font already compressed






ETag: "6a0680cf-5c1c"



link
preload
/_astro/fonts/6af1fd35cf5363be.woff2
200

1
ok
font/woff2
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression (): 17728/17728 Bytes, font already compressed






ETag: "6a0680cf-4540"



link
preload
/_astro/fonts/a0c38573c634fe71.woff2
200

1
ok
font/woff2
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression (): 12672/12672 Bytes, font already compressed






ETag: "6a0680cf-3180"



link
preload
/_astro/fonts/cd13d88ddef11b42.woff2
200

1
ok
font/woff2
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression (): 24408/24408 Bytes, font already compressed






ETag: "6a0680cf-5f58"



link
preload
/_astro/fonts/fca302c0a28f32ff.woff2
200

1
ok
font/woff2
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression (): 23040/23040 Bytes, font already compressed






ETag: "6a0680cf-5a00"



link
stylesheet
/_astro/_astro_assets.BYlsyhyv.css
200

1
ok
text/css; charset=utf-8
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable - with long duration found.
159 Bytes






ETag: W/"6a0680cf-153"

local SRI possible, possible hash-values:

 

sha256-oT//S4dlABy9FLt6JyS4Hu3pgldCZokQ5WhcRTfatuc=
sha384-jiffBNMfZCKPOFq+cGA2g5kooWqlxt8Y7pdo1qyTVqfm51Zutps4e26WejfMM37I
sha512-/RhdyVHZ2EhaiIPdAXE8cfznCg8hiy/AgUYuqDwWMjm3gkyZgEhObZYTsdVZAycpbR1rZ29SWpG9GSoGT49/vQ==

 

<link rel="stylesheet" href="/_astro/_astro_assets.BYlsyhyv.css" crossorigin="anonymous" integrity="sha256-oT//S4dlABy9FLt6JyS4Hu3pgldCZokQ5WhcRTfatuc=" />



link
stylesheet
/_astro/FooterLinks.Dk1a6VyA.css
200

1
ok
text/css; charset=utf-8
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable - with long duration found.
Compression (gzip): 11568/52498 Bytes






ETag: W/"6a0680cf-cd12"

local SRI possible, possible hash-values:

 

sha256-qicY2ZIygGzzVLxSO7sI6TyOie5g3l/IM/rfo76S9Go=
sha384-en81uI30lLoZb1abfT/ZFuF060lTYF86EIrypTNPX9ogzheTCVLp3sTlEtKxtt85
sha512-0s18VqepYhURKaaASEkk2VbDL5L2AwNFaoEiGvZPYGMhlOn400oinvlzWdd5aW8L3LZYcuIhcQtffakKSr0hVg==

 

<link rel="stylesheet" href="/_astro/FooterLinks.Dk1a6VyA.css" crossorigin="anonymous" integrity="sha256-qicY2ZIygGzzVLxSO7sI6TyOie5g3l/IM/rfo76S9Go=" />



meta
charset
utf-8


1
ok















meta
og:description
Full Stack Developer für anspruchsvolle Web-Applikationen – seit über 25 Jahren


1
ok















meta
og:image
https://ledermann.dev/assets/images/photo.jpg
200

1
ok
image/jpeg
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression - 2279115 Bytes






ETag: "6a0680cf-22c6cb"



meta
og:image:height
512


1
ok















meta
og:image:width
512


1
ok















meta
og:locale
de_DE


1
ok















meta
og:site_name
Georg Ledermann, Full Stack Developer


1
ok















meta
og:title
Georg Ledermann, Full Stack Developer


1
ok















meta
og:type
website


1
ok















meta
og:url
https://ledermann.dev/
200

1
ok
text/html; charset=utf-8
X-Content-Type-Options nosniff found





11425 Bytes






ETag: W/"6a0680d0-c66f"



meta
twitter:account_id
4503599630504058


1
ok















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


1
ok















meta
twitter:title
Georg Ledermann, Full Stack Developer


1
ok















meta
astro-view-transitions-enabled
true


1
ok















meta
astro-view-transitions-fallback
animate


1
ok















meta
author
Georg Ledermann


1
ok















meta
description
Full Stack Developer für anspruchsvolle Web-Applikationen – seit über 25 Jahren


1
ok















meta
generator
Astro v6.3.3


1
ok















meta
theme-color
#2d3748


1
ok















meta
twitter:card
summary_large_image


1
ok















meta
twitter:creator
@ledermann


1
ok















meta
twitter:site
@ledermann


1
ok















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


1
ok















script
src
/_astro/AiCodingStats.astro_astro_type_script_index_0_lang.BXpJufA9.js
200

1
ok
Missing defer / async attribute. text/javascript; charset=utf-8
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable - with long duration found.
213 Bytes






ETag: W/"6a0680cf-104"

local SRI possible, possible hash-values:

 

sha256-yA93ZfgBZUWZOq0bfsLRgsKhTYoGUuFZBhl8wVaaf1c=
sha384-K5iwrZPm/6JZJjWA+fbVXN4zHICgBbnUJf8zgQuZqb3fbYOorghcDje70UdT2fyL
sha512-A5K/ST3hpc0L6wEW2N0buyEr4Ls9GXKsOUI/DTCzqz+c1QAqVWhwwFtJ6Wykell9mKx1srWGlhq6uWClbgalEw==

 

<script src="/_astro/AiCodingStats.astro_astro_type_script_index_0_lang.BXpJufA9.js" crossorigin="anonymous" integrity="sha256-yA93ZfgBZUWZOq0bfsLRgsKhTYoGUuFZBhl8wVaaf1c=" />



script
src
/_astro/ClientRouter.astro_astro_type_script_index_0_lang.CAqDO0tx.js
200

1
ok
Missing defer / async attribute. text/javascript; charset=utf-8
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable - with long duration found.
Compression (gzip): 6084/15896 Bytes






ETag: W/"6a0680cf-3e18"

local SRI possible, possible hash-values:

 

sha256-zhey1qt+3CvNw3qtD8fb6g9UtQsP6eZmns+kZXe4pw8=
sha384-m/0k7e3zkp+T+rE4w7Q0yutCF3I1GK7lEYTjWU+5MiZgIvNwYyTc+HACIGSFQOP6
sha512-hWG5d3ZeDvTtS4+DQ0tnju/kIGdtydBKcjLU/XVdxO9qEgltlCJ3VsEnZTV2b5rsC61Plml/fuipQiW9KF8qsA==

 

<script src="/_astro/ClientRouter.astro_astro_type_script_index_0_lang.CAqDO0tx.js" crossorigin="anonymous" integrity="sha256-zhey1qt+3CvNw3qtD8fb6g9UtQsP6eZmns+kZXe4pw8=" />



script
src
/_astro/Home.astro_astro_type_script_index_0_lang.ED7Zq6qX.js
200

1
ok
Missing defer / async attribute. text/javascript; charset=utf-8
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable - with long duration found.
138 Bytes






ETag: W/"6a0680cf-80"

local SRI possible, possible hash-values:

 

sha256-/biwCkRCK8RnvO2vv/EuIzs8pz3IkP+6q0qHWj5KvLs=
sha384-6eF7NDbUidq0cxKtcvJAiu5IpAlOWc5Gou2gOGXMSaCrQSHltV3Cbp4G/WY12Clw
sha512-YI8wWrgbBdOuUFdKwNijPDYq8+wIHx9csU3EaqrVVdtQfxBGHt5ng6GHW8IkZjNtxCbxv4eAJth3YRvpRvwckQ==

 

<script src="/_astro/Home.astro_astro_type_script_index_0_lang.ED7Zq6qX.js" crossorigin="anonymous" integrity="sha256-/biwCkRCK8RnvO2vv/EuIzs8pz3IkP+6q0qHWj5KvLs=" />



script
src
/_astro/LanguageStats.astro_astro_type_script_index_0_lang.BWtuDufU.js
200

1
ok
Missing defer / async attribute. text/javascript; charset=utf-8
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable - with long duration found.
Compression (gzip): 953/2006 Bytes






ETag: W/"6a0680cf-7d6"

local SRI possible, possible hash-values:

 

sha256-HR4+wq/NxpLU/WJ22u7nE7++C8I3lTZy6cFic7wUcxs=
sha384-n1q3cTqGCQJFi1eNPVOUr+tyERL+PRNOBdWs7eu+sO2hj9Gg5dkq4Qa7aCbBqcJN
sha512-qbaOb6Zp4aAsC48Rcb6K+6uOhDt9CnGe5nR/OlLqMyV5caNl99NKmaPg0NaqDQ105sKin4Vi5feqIb5TYZ86Zw==

 

<script src="/_astro/LanguageStats.astro_astro_type_script_index_0_lang.BWtuDufU.js" crossorigin="anonymous" integrity="sha256-HR4+wq/NxpLU/WJ22u7nE7++C8I3lTZy6cFic7wUcxs=" />



script
src
/_astro/Modal.astro_astro_type_script_index_0_lang.CrrjXLKN.js
200

1
ok
Missing defer / async attribute. text/javascript; charset=utf-8
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable - with long duration found.
236 Bytes






ETag: W/"6a0680cf-19c"

local SRI possible, possible hash-values:

 

sha256-N7mTqtT1mF8kMAVq5EReCSvPRSfUREAs63nVl/ZHjz0=
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local SRI possible, possible hash-values:

 

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Missing defer / async attribute. text/javascript; charset=utf-8
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable - with long duration found.
275 Bytes






ETag: W/"6a0680cf-1c2"

local SRI possible, possible hash-values:

 

sha256-2J1b6uh+Rmx6Qnlu8ie2NrqwUCSpCCP+Ld1EfSJHV30=
sha384-LtoUh+L/ETdL9xLtDvfzb869zjNL8sAPRlVym+NzJTaZUM40P7JLjlJ3WsFd5abj
sha512-vkRf7pwZ0tljYVFjHnyJL+WH1qfhHjcCztVQWsq/zjtj0749UJsz4QkSSLL62nw64445aSm8sD+lIf2SXjfKZA==

 

<script src="/_astro/StickyNav.astro_astro_type_script_index_0_lang.CwcLEnTS.js" crossorigin="anonymous" integrity="sha256-2J1b6uh+Rmx6Qnlu8ie2NrqwUCSpCCP+Ld1EfSJHV30=" />



style

/_astro/fonts/0d0b282e448a3b80.woff2
200

1
ok
font/woff2
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression (): 23236/23236 Bytes, font already compressed






ETag: "6a0680cf-5ac4"



style

/_astro/fonts/13fe8016e8ea5d6c.woff2
200

1
ok
font/woff2
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression (): 24448/24448 Bytes, font already compressed






ETag: "6a0680cf-5f80"



style

/_astro/fonts/432bc10cb95a76c4.woff2
200

1
ok
font/woff2
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression (): 12248/12248 Bytes, font already compressed






ETag: "6a0680cf-2fd8"



style

/_astro/fonts/5d5b9bdb05fd0cd8.woff2
200

1
ok
font/woff2
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression (): 23580/23580 Bytes, font already compressed






ETag: "6a0680cf-5c1c"



style

/_astro/fonts/6af1fd35cf5363be.woff2
200

1
ok
font/woff2
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression (): 17728/17728 Bytes, font already compressed






ETag: "6a0680cf-4540"



style

/_astro/fonts/a0c38573c634fe71.woff2
200

1
ok
font/woff2
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression (): 12672/12672 Bytes, font already compressed






ETag: "6a0680cf-3180"



style

/_astro/fonts/cd13d88ddef11b42.woff2
200

1
ok
font/woff2
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression (): 24408/24408 Bytes, font already compressed






ETag: "6a0680cf-5f58"



style

/_astro/fonts/fca302c0a28f32ff.woff2
200

1
ok
font/woff2
X-Content-Type-Options nosniff found





Cache-Control: public, max-age=31536000, immutable with long duration found.
No Compression (): 23040/23040 Bytes, font already compressed






ETag: "6a0680cf-5a00"


 

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

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

Summary

Good: No non-document-errors
30 errors
1 warnings

TypeMessagenum found
1.errorCSS: Parse Error.24
2.errorCSS: view-transition-name: Property view-transition-name doesn't exist.6
3.warningSection 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.1

Details


TypeMessage + Sample
1errorCSS: view-transition-name: Property view-transition-name doesn't exist.

From line 2, column 144 to line 2, column 154

ion-name: nav-wrapper; }@la
2errorCSS: Parse Error.

From line 2, column 206 to line 2, column 206

old(nav-wrapper) { animation
3errorCSS: Parse Error.

From line 6, column 66 to line 6, column 66

new(nav-wrapper) { animation
4errorCSS: Parse Error.

From line 10, column 93 to line 10, column 93

old(nav-wrapper) { animation
5errorCSS: Parse Error.

From line 14, column 94 to line 14, column 94

new(nav-wrapper) { animation
6errorCSS: view-transition-name: Property view-transition-name doesn't exist.

From line 38, column 120 to line 38, column 127

ion-name: main-nav; }@la
7errorCSS: Parse Error.

From line 38, column 176 to line 38, column 176

on-old(main-nav) { animation
8errorCSS: Parse Error.

From line 42, column 63 to line 42, column 63

on-new(main-nav) { animation
9errorCSS: Parse Error.

From line 46, column 90 to line 46, column 90

on-old(main-nav) { animation
10errorCSS: Parse Error.

From line 50, column 91 to line 50, column 91

on-new(main-nav) { animation
11errorCSS: view-transition-name: Property view-transition-name doesn't exist.

From line 74, column 120 to line 74, column 129

ion-name: page-title; }@la
12errorCSS: Parse Error.

From line 74, column 180 to line 74, column 180

-old(page-title) { animation
13errorCSS: Parse Error.

From line 78, column 65 to line 78, column 65

-new(page-title) { animation
14errorCSS: Parse Error.

From line 82, column 92 to line 82, column 92

-old(page-title) { animation
15errorCSS: Parse Error.

From line 86, column 93 to line 86, column 93

-new(page-title) { animation
16errorCSS: view-transition-name: Property view-transition-name doesn't exist.

From line 110, column 120 to line 110, column 132

ion-name: page-subtitle; }@la
17errorCSS: Parse Error.

From line 110, column 186 to line 110, column 186

d(page-subtitle) { animation
18errorCSS: Parse Error.

From line 114, column 68 to line 114, column 68

w(page-subtitle) { animation
19errorCSS: Parse Error.

From line 118, column 95 to line 118, column 95

d(page-subtitle) { animation
20errorCSS: Parse Error.

From line 122, column 96 to line 122, column 96

w(page-subtitle) { animation
21errorCSS: view-transition-name: Property view-transition-name doesn't exist.

From line 146, column 120 to line 146, column 131

ion-name: social-icons; }@la
22errorCSS: Parse Error.

From line 146, column 184 to line 146, column 184

ld(social-icons) { animation
23errorCSS: Parse Error.

From line 150, column 67 to line 150, column 67

ew(social-icons) { animation
24errorCSS: Parse Error.

From line 154, column 94 to line 154, column 94

ld(social-icons) { animation
25errorCSS: Parse Error.

From line 158, column 95 to line 158, column 95

ew(social-icons) { animation
26errorCSS: view-transition-name: Property view-transition-name doesn't exist.

From line 182, column 120 to line 182, column 129

ion-name: sticky-nav; }@la
27errorCSS: Parse Error.

From line 182, column 180 to line 182, column 180

-old(sticky-nav) { animation
28errorCSS: Parse Error.

From line 186, column 65 to line 186, column 65

-new(sticky-nav) { animation
29errorCSS: Parse Error.

From line 190, column 92 to line 190, column 92

-old(sticky-nav) { animation
30errorCSS: Parse Error.

From line 194, column 93 to line 194, column 93

-new(sticky-nav) { animation
31warningSection 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 267, column 2937 to line 267, column 3013

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.DomainTypeNS used
1
net
NS
a.root-servers.net (2001:503:ba3e::2:30)

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
f.root-servers.net (2001:500:2f::f)

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
d.nic.fr (2001:678:c::1)
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
f.root-servers.net (2001:500:2f::f)

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

DomainnameflagNameValue∑ Queries∑ Timeout
www.ledermann.dev
5
issue
letsencrypt.org
1
0
ledermann.dev
5
issue
letsencrypt.org
1
0

9
issuewild
letsencrypt.org
1
0
dev
0

no CAA entry found
1
0

 

15. TXT - Entries

DomainnameTXT EntryStatus∑ Queries∑ Timeout
ledermann.dev
brevo-code:37d9b1c8901bd46bee2f3f10b29ed9e3
ok
1
0
ledermann.dev
google-site-verification=vN-zWPC5_zEJn-WX_9OxfpmxGjKT9w-ALtYwCI8sIaI
ok
1
0
ledermann.dev
v=spf1 include:_mailcust.gandi.net ?all
ok
1
0
www.ledermann.dev

ok
1
0
_acme-challenge.ledermann.dev

missing entry or wrong length
1
0
_acme-challenge.www.ledermann.dev

Name Error - The domain name does not exist
1
0
_acme-challenge.ledermann.dev.ledermann.dev

perhaps wrong
1
0
_acme-challenge.www.ledermann.dev.ledermann.dev

perhaps wrong
1
0
_acme-challenge.www.ledermann.dev.www.ledermann.dev

Name Error - The domain name does not exist
1
0

 

16. DomainService - Entries

TypeDomainPrefValueDNS-errornum AnswersStatusDescription
MX

ledermann.dev
10
spool.mail.gandi.net
02ok

A


217.70.178.1
01ok

AAAA


2001:4b98:e00::1
01ok

CNAME


00ok
MX

ledermann.dev
50
fb.mail.gandi.net
02ok

A


217.70.178.215
03ok

A


217.70.178.216
03ok

A


217.70.178.217
03ok

AAAA


2001:4b98:dc4:8::216
03ok

AAAA


2001:4b98:dc4:8::217
03ok

AAAA


2001:4b98:dc4:8::215
03ok

CNAME


00ok
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
DomainIPPortnum CipherstimeStd.ProtocolForward Secrecy
ledermann.dev
116.203.125.190
443
3 Ciphers29.23 sec
0 without, 3 FS
100.00 %
ledermann.dev
2a01:4f8:c2c:2088::1
443
3 Ciphers24.65 sec
0 without, 3 FS
100.00 %
www.ledermann.dev
116.203.125.190
443
3 Ciphers29.65 sec
0 without, 3 FS
100.00 %
www.ledermann.dev
2a01:4f8:c2c:2088::1
443
3 Ciphers24.95 sec
0 without, 3 FS
100.00 %
Complete

4
12 Ciphers
3.00 Ciphers/Check
108.48 sec27.12 sec/Check
0 without, 12 FS
100.00 %

Details
DomainIPPortCipher (OpenSsl / IANA)
ledermann.dev
116.203.125.190
443
ECDHE-RSA-CHACHA20-POLY1305
(Secure)
TLSv1.2
0xCC,0xA8
FS
3 Ciphers, 29.23 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, 24.65 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, 29.65 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, 24.95 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.

 

 

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