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No trusted Certificate

Checked:
03.09.2025 23:25:15

Older results

N - 03.09.2025 23:14:50

1. IP-Addresses

Host	Type	IP-Address	is auth.	∑ Queries	∑ Timeout
studenten-bilden-schueler.de	A	75.2.60.5 Seattle/Washington/United States (US) - Amazon.com, Inc. Hostname: acd89244c803f7181.awsglobalaccelerator.com	yes	1	0
	AAAA		yes
www.studenten-bilden-schueler.de	A	75.2.60.5 Seattle/Washington/United States (US) - Amazon.com, Inc. Hostname: acd89244c803f7181.awsglobalaccelerator.com	yes	1	0
	AAAA		yes
*.studenten-bilden-schueler.de	A	75.2.60.5	yes
	AAAA		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 46441, Flags 256


	Public Key with Algorithm 8, KeyTag 53148, Flags 256


	1 RRSIG RR to validate DNSKEY RR found


	RRSIG-Owner (root), Algorithm: 8, 0 Labels, original TTL: 172800 sec, Signature-expiration: 20.09.2025, 00:00:00 +, Signature-Inception: 30.08.2025, 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: de
de	1 DS RR in the parent zone found


	DS with Algorithm 8, KeyTag 26755, DigestType 2 and Digest 80E1eAmllUMRzLgq3hFMbB1ySnXAOVE3qjl4A1Ql540=


	1 RRSIG RR to validate DS RR found


	RRSIG-Owner de., Algorithm: 8, 1 Labels, original TTL: 86400 sec, Signature-expiration: 16.09.2025, 17:00:00 +, Signature-Inception: 03.09.2025, 16:00:00 +, KeyTag 46441, Signer-Name: (root)


	• Status: Good - Algorithmus 8 and DNSKEY with KeyTag 46441 used to validate the DS RRSet in the parent zone


	2 DNSKEY RR found


	Public Key with Algorithm 8, KeyTag 25113, Flags 256


	Public Key with Algorithm 8, KeyTag 26755, Flags 257 (SEP = Secure Entry Point)


	1 RRSIG RR to validate DNSKEY RR found


	RRSIG-Owner de., Algorithm: 8, 1 Labels, original TTL: 86400 sec, Signature-expiration: 12.09.2025, 00:03:48 +, Signature-Inception: 28.08.2025, 22:33:48 +, KeyTag 26755, Signer-Name: de


	• Status: Good - Algorithmus 8 and DNSKEY with KeyTag 26755 used to validate the DNSKEY RRSet


	• Status: Valid Chain of trust. Parent-DS with Algorithm 8, KeyTag 26755, DigestType 2 and Digest "80E1eAmllUMRzLgq3hFMbB1ySnXAOVE3qjl4A1Ql540=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone

Zone: studenten-bilden-schueler.de
studenten-bilden-schueler.de	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 "fckvuuonds5s6ammk2h5uppc86upuvaf" between the hashed NSEC3-owner "fckupqedjafrhbo6s2ks1paai60u7stj" and the hashed NextOwner "fcl0io23ln71k3nip5n960borh1q89ar". So the parent zone confirmes the not-existence of a DS RR. Bitmap: A, RRSIG Validated: RRSIG-Owner fckupqedjafrhbo6s2ks1paai60u7stj.de., Algorithm: 8, 2 Labels, original TTL: 7200 sec, Signature-expiration: 13.09.2025, 07:17:34 +, Signature-Inception: 30.08.2025, 05:47:34 +, KeyTag 25113, Signer-Name: de


	DS-Query in the parent zone sends valid NSEC3 RR with the Hash "tjlb7qbojvmlf1s6gdriru7vsms1lg16" as Owner. That's the Hash of "de" with the NextHashedOwnerName "tjlcsjat4ljtvo0tjncrrdf6kf6onefb". So that domain name is the Closest Encloser of "studenten-bilden-schueler.de". Opt-Out: True. Bitmap: NS, SOA, RRSIG, DNSKEY, NSEC3PARAM Validated: RRSIG-Owner tjlb7qbojvmlf1s6gdriru7vsms1lg16.de., Algorithm: 8, 2 Labels, original TTL: 7200 sec, Signature-expiration: 13.09.2025, 06:17:16 +, Signature-Inception: 30.08.2025, 04:47:16 +, KeyTag 25113, Signer-Name: de


	0 DNSKEY RR found




Zone: www.studenten-bilden-schueler.de
www.studenten-bilden-schueler.de	0 DS RR in the parent zone found

3. Name Servers

Domain	Nameserver	NS-IP
www.studenten-bilden-schueler.de	• dns01.manitu.net		•
studenten-bilden-schueler.de	• dns01.manitu.net	217.11.48.200 Sankt Wendel/Saarland/Germany (DE) - manitu GmbH	•
	•	2a00:1828:1000:1148::2 Sankt Wendel/Saarland/Germany (DE) - manitu GmbH	•
	• dns02.manitu.net	217.11.49.200 Sankt Wendel/Saarland/Germany (DE) - manitu GmbH	•
	•	2a00:1828:1000:1149::2 Sankt Wendel/Saarland/Germany (DE) - manitu GmbH	•
de	• a.nic.de / ns-2.de.de8.knot		•
	• f.nic.de / ns-1.de.de1.knot		•
	• l.de.net / ns-2.de.fr1.knot		•
	• n.de.net / s3.dex		•
	• s.de.net / ns-2.de.de9.knot		•
	• z.nic.de / ns-1.de.de2.bind		•

4. SOA-Entries

Domain:	de
Zone-Name:	de
Primary:	f.nic.de
Mail:	dns-operations.denic.de
Serial:	1756934656
Refresh:	7200
Retry:	7200
Expire:	3600000
TTL:	7200
num Entries:	6

Domain:	studenten-bilden-schueler.de
Zone-Name:	studenten-bilden-schueler.de
Primary:	dns01.manitu.net
Mail:	hostmaster.manitu.net
Serial:	2021032501
Refresh:	10800
Retry:	3600
Expire:	604800
TTL:	86400
num Entries:	4

Domain:	www.studenten-bilden-schueler.de
Zone-Name:	studenten-bilden-schueler.de
Primary:	dns01.manitu.net
Mail:	hostmaster.manitu.net
Serial:	2021032501
Refresh:	10800
Retry:	3600
Expire:	604800
TTL:	86400
num Entries:	1

5. Screenshots

Startaddress: https://studytutors.de/, address used: https://studytutors.de/, Screenshot created 2025-09-03 23:27:54 +00:0 url is insecure, certificate invalid

Mobil (412px x 732px)

1066 milliseconds

Screenshot mobile - https://studytutors.de/

Mobil + Landscape (732px x 412px)

1775 milliseconds

Screenshot mobile landscape - https://studytutors.de/

Screen (1280px x 1680px)

1290 milliseconds

Screenshot Desktop - https://studytutors.de/

Mobile- and other Chrome-Checks

	width	height
visual Viewport	397	732
content Size	415	6717

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://studenten-bilden-schueler.de/ 75.2.60.5	301	https://studenten-bilden-schueler.de/ Html is minified: 100.00 %	0.040	A
Date: Wed, 03 Sep 2025 21:25:45 GMT
Location: https://studenten-bilden-schueler.de/
Server: Netlify
X-Nf-Request-Id: 01K48QHB6F2JZV50W3V20E4VVY
Content-Type: text/plain; charset=utf-8
Content-Length: 52

• http://www.studenten-bilden-schueler.de/ 75.2.60.5	301	https://www.studenten-bilden-schueler.de/ Html is minified: 100.00 %	0.020	A
Date: Wed, 03 Sep 2025 21:25:45 GMT
Location: https://www.studenten-bilden-schueler.de/
Server: Netlify
X-Nf-Request-Id: 01K48QHB7RF1VYW7H7JGC7NXCB
Content-Type: text/plain; charset=utf-8
Content-Length: 56

• https://studenten-bilden-schueler.de/ 75.2.60.5	301	https://studytutors.de/ Html is minified: 100.00 %	2.733	N
Certificate error: RemoteCertificateNameMismatch
Age: 0
Cache-Control: public, must-revalidate, max-age=0
Cache-Status: "Netlify Edge"; fwd=miss
Date: Wed, 03 Sep 2025 21:25:45 GMT
Location: https://studytutors.de/
Server: Netlify
Strict-Transport-Security: max-age=31536000
X-Nf-Request-Id: 01K48QHBE1MBNAZF5ZMJB5RY8R
Content-Length: 38
Content-Type: text/plain; charset=utf-8

• https://www.studenten-bilden-schueler.de/ 75.2.60.5	301	https://studytutors.de/ Html is minified: 100.00 %	2.486	N
Certificate error: RemoteCertificateNameMismatch
Date: Wed, 03 Sep 2025 21:25:49 GMT
Location: https://studytutors.de/
Server: Netlify
Strict-Transport-Security: max-age=31536000
X-Nf-Request-Id: 01K48QHFMWWDXPHG91NZ90RMJF
Content-Type: text/plain; charset=utf-8
Content-Length: 38

• https://studytutors.de/ br used - 11063 / 70748 - 84.36 % Inline-JavaScript (∑/total): 2/33618 Inline-CSS (∑/total): 0/0	200	Html is minified: 202.35 % Other inline scripts (∑/total): 0/0	2.843	N
Certificate error: RemoteCertificateNameMismatch
Accept-Ranges: bytes
Age: 1223
Cache-Control: public, must-revalidate, max-age=0
Cache-Status: "Netlify Edge"; hit
Date: Wed, 03 Sep 2025 21:25:57 GMT
ETag: "a1efb6e94ff56607a80197b9d36f3aa5-ssl-df"
Server: Netlify
Strict-Transport-Security: max-age=31536000
Vary: Accept-Encoding
X-Nf-Request-Id: 01K48QHQKBGEMA7WAPES4Z57ET
Content-Encoding: br
Content-Length: 11063
Content-Type: text/html; charset=UTF-8

• http://studenten-bilden-schueler.de/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 75.2.60.5	404		0.193	A
Not Found
Visible Content:
Age: 0
Cache-Control: no-store
Cache-Status: "Netlify Edge"; fwd=miss
Date: Wed, 03 Sep 2025 21:25:53 GMT
Server: Netlify
X-Nf-Request-Id: 01K48QHKDTFAG1P52YX9Z6Q9BT
Content-Length: 0

• http://www.studenten-bilden-schueler.de/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 75.2.60.5	404		0.133	A
Not Found
Visible Content:
Age: 1
Cache-Control: no-store
Cache-Status: "Netlify Edge"; fwd=miss
Date: Wed, 03 Sep 2025 21:25:54 GMT
Server: Netlify
X-Nf-Request-Id: 01K48QHKMY5AT4Z7RABRYVT36N
Content-Length: 0

• https://75.2.60.5/ 75.2.60.5	404		2.047	N
Not Found
Certificate error: RemoteCertificateNameMismatch
Date: Wed, 03 Sep 2025 21:25:54 GMT
Server: Netlify
X-Nf-Request-Id: 01K48QHKWY8259G0SZV80S8Q97
Content-Length: 0

7. Comments

	1. General Results, most used to calculate the result
A	name "studenten-bilden-schueler.de" is domain, public suffix is ".de", top-level-domain is ".de", top-level-domain-type is "country-code", Country is Germany, tld-manager is "DENIC eG", num .de-domains preloaded: 11085 (complete: 276475)
A	Good: All ip addresses are public addresses
	Warning: Only one ip address found: studenten-bilden-schueler.de has only one ip address.
	Warning: Only one ip address found: www.studenten-bilden-schueler.de has only one ip address.
	Warning: No ipv6 address found. Ipv6 is the future with a lot of new features. So every domain name should have an ipv6 address. See https://en.wikipedia.org/wiki/IPv6: studenten-bilden-schueler.de has no ipv6 address.
	Warning: No ipv6 address found. Ipv6 is the future with a lot of new features. So every domain name should have an ipv6 address. See https://en.wikipedia.org/wiki/IPv6: www.studenten-bilden-schueler.de has no ipv6 address.
A	Good: No asked Authoritative Name Server had a timeout
A	https://studenten-bilden-schueler.de/ 75.2.60.5	301	https://studytutors.de/	Correct redirect https to https
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.
	HSTS-Preload-Status: unknown. Domain never included in the Preload-list. Check https://hstspreload.org/ to learn some basics about the Google-Preload-List.
A	http://studenten-bilden-schueler.de/ 75.2.60.5	301	https://studenten-bilden-schueler.de/	Correct redirect http - https with the same domain name
A	http://www.studenten-bilden-schueler.de/ 75.2.60.5	301	https://www.studenten-bilden-schueler.de/	Correct redirect http - https with the same domain name
I	https://studytutors.de/	200		Content problems or problems with resources included - http links, files doesn't exist, different Content-Type definitions. Check the Html-Content - Part.
M	https://75.2.60.5/ 75.2.60.5	404		Misconfiguration - main pages should never send http status 400 - 499
N	https://studenten-bilden-schueler.de/ 75.2.60.5	301	https://studytutors.de/	Error - Certificate isn't trusted, RemoteCertificateNameMismatch
N	https://studytutors.de/	200		Error - Certificate isn't trusted, RemoteCertificateNameMismatch
N	https://www.studenten-bilden-schueler.de/ 75.2.60.5	301	https://studytutors.de/	Error - Certificate isn't trusted, RemoteCertificateNameMismatch
N	https://75.2.60.5/ 75.2.60.5	404		Error - Certificate isn't trusted, RemoteCertificateNameMismatch
	Info: Checking all ip addresses of that domain without sending the hostname only one certificate found. Checking all ip addresses and sending the hostname only one certificate found. Both certificates are the same. So that domain doesn't require Server Name Indication (SNI), it's the primary certificate of that set of ip addresses.: Domain studenten-bilden-schueler.de, 1 ip addresses, 1 different http results.
	Info: Checking all ip addresses of that domain without sending the hostname only one certificate found. Checking all ip addresses and sending the hostname only one certificate found. Both certificates are the same. So that domain doesn't require Server Name Indication (SNI), it's the primary certificate of that set of ip addresses.: Domain www.studenten-bilden-schueler.de, 1 ip addresses, 1 different http results.
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.studenten-bilden-schueler.de
	2. Header-Checks
F	studytutors.de	Content-Security-Policy		Critical: Missing Header:
F	studytutors.de	X-Content-Type-Options		Critical: Missing Header:
F	studytutors.de	Referrer-Policy		Critical: Missing Header:
F	studytutors.de	Permissions-Policy		Critical: Missing Header:
B	studytutors.de	Cross-Origin-Embedder-Policy		Info: Missing Header
B	studytutors.de	Cross-Origin-Opener-Policy		Info: Missing Header
B	studytutors.de	Cross-Origin-Resource-Policy		Info: Missing Header
	3. DNS- and NameServer - Checks
A	Info:: 9 Root-climbing DNS Queries required to find all IPv4- and IPv6-Addresses of 2 Name Servers.
A	Info:: 9 Queries complete, 9 with IPv6, 0 with IPv4.
A	Good: All DNS Queries done via IPv6.
A	Good: Some ip addresses of name servers found with the minimum of two DNS Queries. One to find the TLD-Zone, one to ask the TLD-Zone.dns01.manitu.net (217.11.48.200, 2a00:1828:1000:1148::2), dns02.manitu.net (217.11.49.200, 2a00:1828:1000:1149::2)
	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:: 2 different Name Servers found: dns01.manitu.net, dns02.manitu.net, 2 Name Servers included in Delegation: dns01.manitu.net, dns02.manitu.net, 2 Name Servers included in 1 Zone definitions: dns01.manitu.net, dns02.manitu.net, 1 Name Servers listed in SOA.Primary: dns01.manitu.net.
A	Good: Only one SOA.Primary Name Server found.: dns01.manitu.net.
A	Good: SOA.Primary Name Server included in the delegation set.: dns01.manitu.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: dns01.manitu.net, dns02.manitu.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: 2 different Name Servers found
A	Good: All name servers have ipv4- and ipv6-addresses.: 2 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.: 2 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: manitu.net
	Warning: All Name Servers from the same Country / IP location.: 2 Name Servers, 1 Countries: DE
A	Info: Ipv4-Subnet-list: 2 Name Servers, 1 different subnets (first Byte): 217., 1 different subnets (first two Bytes): 217.11., 2 different subnets (first three Bytes): 217.11.48., 217.11.49.
A	Good: Name Server IPv4-addresses from different subnet found:
A	Info: IPv6-Subnet-list: 2 Name Servers with IPv6, 1 different subnets (first block): 2a00:, 1 different subnets (first two blocks): 2a00:1828:, 1 different subnets (first three blocks): 2a00:1828:1000:, 2 different subnets (first four blocks): 2a00:1828:1000:1148:, 2a00:1828:1000:1149:
A	Good: Name Server IPv6 addresses from different subnets found.
A	Good: Nameserver supports TCP connections: 4 good Nameserver
A	Good: Nameserver supports Echo Capitalization: 4 good Nameserver
A	Good: Nameserver supports EDNS with max. 512 Byte Udp payload, message is smaller: 4 good Nameserver
A	Good: Nameserver has passed 10 EDNS-Checks (OP100, FLAGS, V1, V1OP100, V1FLAGS, DNSSEC, V1DNSSEC, NSID, COOKIE, CLIENTSUBNET): 4 good Nameserver
A	Good: All SOA have the same Serial Number
	Warning: No CAA entry with issue/issuewild found, every CAA can create a certificate. Read https://en.wikipedia.org/wiki/DNS_Certification_Authority_Authorization to learn some basics about the idea of CAA. Your name server must support such an entry. Not all dns providers support CAA entries.
	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://studytutors.de/	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://studytutors.de/	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.
A	Good: All script Elements (type text/javascript) and src-Attribute have a defer / async - Attribute. So loading and executing these JavaScripts doesn't block parsing and rendering the Html-Output.
A	Good: All CSS / JavaScript files are sent compressed (gzip, deflate, br checked). That reduces the content of the files. 3 external CSS / JavaScript files found
A	Good: All svg-Images greater 1024 Bytes without internal compression are compressed. Svg is an Xml-Application, so Compression reduces the size of the file. 10 images (type image/svg+xml, image/x-icon, image/vnd.microsoft.icon) found with compression.
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. 9 images (type image/png, image/jpg, image/jpeg, image/webp, image/gif) found without additional Compression. Not required because these images are already compressed
	Warning: CSS / JavaScript files with a missing or too short Cache-Control header found. Browsers should cache and re-use these files. 0 external CSS / JavaScript files without Cache-Control-Header, 0 with Cache-Control, but no max-age, 5 with Cache-Control max-age too short (minimum 7 days), 0 with Cache-Control long enough, 5 complete.
	Warning: Images with a missing or too short Cache-Control header found. Browsers should cache and re-use these files. 0 image files without Cache-Control-Header, 0 with Cache-Control, but no max-age, 3 with Cache-Control max-age too short (minimum 7 days), 16 with Cache-Control long enough, 19 complete.
A	Good: All checked attribute values are enclosed in quotation marks (" or ').
A	Good: All img-elements have a valid alt-attribute.: 19 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
	https://75.2.60.5/ 75.2.60.5	404	2.047 seconds	Warning: 404 needs more then one second
A	Duration: 167170 milliseconds, 167.170 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

studytutors.de

443

name does not match

Tls12

ECDH Ephermal

255

Aes128

128

Sha256

not supported

studytutors.de

443

name does not match

Tls12

ECDH Ephermal

255

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 - incomplete	1	CN=*.netlify.app, O="Netlify, Inc", L=San Francisco, C=US, ST=California
	2	CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1, O=DigiCert Inc, C=US

studenten-bilden-schueler.de

75.2.60.5

443

name does not match

Tls12

ECDH Ephermal

255

Aes128

128

Sha256

not supported

studenten-bilden-schueler.de

75.2.60.5

443

name does not match

Tls12

ECDH Ephermal

255

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 - incomplete	1	CN=*.netlify.app, O="Netlify, Inc", L=San Francisco, C=US, ST=California
	2	CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1, O=DigiCert Inc, C=US

www.studenten-bilden-schueler.de

75.2.60.5

443

name does not match

Tls12

ECDH Ephermal

255

Aes128

128

Sha256

not supported

www.studenten-bilden-schueler.de

75.2.60.5

443

name does not match

Tls12

ECDH Ephermal

255

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 - incomplete	1	CN=*.netlify.app, O="Netlify, Inc", L=San Francisco, C=US, ST=California
	2	CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1, O=DigiCert Inc, C=US

75.2.60.5

443

name does not match

Tls12

ECDH Ephermal

255

Aes128

128

Sha256

not supported

75.2.60.5

443

name does not match

Tls12

ECDH Ephermal

255

Aes128

128

Sha256

not supported

http/2 via ALPN supported
Cert sent without SNI

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

http/2 via ALPN supported
Cert sent without SNI

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

Chain - incomplete	1	CN=*.netlify.app, O="Netlify, Inc", L=San Francisco, C=US, ST=California
	2	CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1, O=DigiCert Inc, C=US

9. Certificates

CN=*.netlify.app, O="Netlify, Inc", L=San Francisco, S=California, C=US

31.01.2025

04.03.2026
41 days expired

*.netlify.app, netlify.app - 2 entries

CN=*.netlify.app, O="Netlify, Inc", L=San Francisco, S=California, C=US

31.01.2025

04.03.2026
41 days expired

*.netlify.app, netlify.app - 2 entries

Keyalgorithm	EC Public Key (256 bit, prime256v1)
Signatur:	SHA256 With RSA-Encryption
Serial Number:	04E8761C314B519E75E93581A84A383A
Thumbprint:	0428C9A3BC06509C6B0B67728227C63D991B5B71
SHA256 / Certificate:	+jRqoBz1nMcwylUjE6E+DyGMOgu1zOVnCf5k7JdOjXU=
SHA256 hex / Cert (DANE * 0 1):	e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA256 hex / PublicKey (DANE * 1 1):	0c5bf4acf22686578bcc8bdcb6f12eb016b9c27cd0ffe692ab25b5f32dba2feb
SHA256 hex / Subject Public Key Information (SPKI):	0c5bf4acf22686578bcc8bdcb6f12eb016b9c27cd0ffe692ab25b5f32dba2feb (is buggy, ignore the result)
SPKI checked via https://v1.pwnedkeys.com/spki-hash:	Good: Key isn't compromised
OCSP - Url:	http://ocsp.digicert.com
OCSP - must staple:	no
Certificate Transparency:	yes
Enhanced Key Usage:	Serverauthentifizierung (1.3.6.1.5.5.7.3.1), Clientauthentifizierung (1.3.6.1.5.5.7.3.2)

CN=*.netlify.app, O="Netlify, Inc", L=San Francisco, S=California, C=US

31.01.2025

04.03.2026
41 days expired

*.netlify.app, netlify.app - 2 entries

CN=*.netlify.app, O="Netlify, Inc", L=San Francisco, S=California, C=US

31.01.2025

04.03.2026
41 days expired

*.netlify.app, netlify.app - 2 entries

Keyalgorithm	EC Public Key (256 bit, prime256v1)
Signatur:	SHA256 With RSA-Encryption
Serial Number:	04E8761C314B519E75E93581A84A383A
Thumbprint:	0428C9A3BC06509C6B0B67728227C63D991B5B71
SHA256 / Certificate:	+jRqoBz1nMcwylUjE6E+DyGMOgu1zOVnCf5k7JdOjXU=
SHA256 hex / Cert (DANE * 0 1):	e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA256 hex / PublicKey (DANE * 1 1):	0c5bf4acf22686578bcc8bdcb6f12eb016b9c27cd0ffe692ab25b5f32dba2feb
SHA256 hex / Subject Public Key Information (SPKI):	0c5bf4acf22686578bcc8bdcb6f12eb016b9c27cd0ffe692ab25b5f32dba2feb (is buggy, ignore the result)
SPKI checked via https://v1.pwnedkeys.com/spki-hash:	Good: Key isn't compromised
OCSP - Url:	http://ocsp.digicert.com
OCSP - must staple:	no
Certificate Transparency:	yes
Enhanced Key Usage:	Serverauthentifizierung (1.3.6.1.5.5.7.3.1), Clientauthentifizierung (1.3.6.1.5.5.7.3.2)

CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1, O=DigiCert Inc, C=US

30.03.2021

30.03.2031
expires in 1811 days

CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1, O=DigiCert Inc, C=US

30.03.2021

30.03.2031
expires in 1811 days

Keyalgorithm	RSA encryption (2048 bit)
Signatur:	SHA256 With RSA-Encryption
Serial Number:	0CF5BD062B5602F47AB8502C23CCF066
Thumbprint:	1B511ABEAD59C6CE207077C0BF0E0043B1382612
SHA256 / Certificate:	yAJfn8Zf38lbPKjMeGe5pYe1J3lzlXkXRj/IE9C2Jak=
SHA256 hex / Cert (DANE * 0 1):	e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA256 hex / PublicKey (DANE * 1 1):	59e738e674221702af1edb87c5200c1a4b75f64fae3d2c3d265124c61bd83c79
SHA256 hex / Subject Public Key Information (SPKI):
SPKI checked via https://v1.pwnedkeys.com/spki-hash:	Check unknown. No result 404 / 200
OCSP - Url:	http://ocsp.digicert.com
OCSP - must staple:	no
Certificate Transparency:	no
Enhanced Key Usage:	Serverauthentifizierung (1.3.6.1.5.5.7.3.1), Clientauthentifizierung (1.3.6.1.5.5.7.3.2)

CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1, O=DigiCert Inc, C=US

30.03.2021

30.03.2031
expires in 1811 days

CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1, O=DigiCert Inc, C=US

30.03.2021

30.03.2031
expires in 1811 days

Keyalgorithm	RSA encryption (2048 bit)
Signatur:	SHA256 With RSA-Encryption
Serial Number:	0CF5BD062B5602F47AB8502C23CCF066
Thumbprint:	1B511ABEAD59C6CE207077C0BF0E0043B1382612
SHA256 / Certificate:	yAJfn8Zf38lbPKjMeGe5pYe1J3lzlXkXRj/IE9C2Jak=
SHA256 hex / Cert (DANE * 0 1):	e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA256 hex / PublicKey (DANE * 1 1):	59e738e674221702af1edb87c5200c1a4b75f64fae3d2c3d265124c61bd83c79
SHA256 hex / Subject Public Key Information (SPKI):
SPKI checked via https://v1.pwnedkeys.com/spki-hash:	Check unknown. No result 404 / 200
OCSP - Url:	http://ocsp.digicert.com
OCSP - must staple:	no
Certificate Transparency:	no
Enhanced Key Usage:	Serverauthentifizierung (1.3.6.1.5.5.7.3.1), Clientauthentifizierung (1.3.6.1.5.5.7.3.2)

CN=DigiCert Global Root G2, OU=www.digicert.com, O=DigiCert Inc, C=US

29.10.2024

09.11.2031
expires in 2035 days

CN=DigiCert Global Root G2, OU=www.digicert.com, O=DigiCert Inc, C=US

29.10.2024

09.11.2031
expires in 2035 days

Keyalgorithm	RSA encryption (2048 bit)
Signatur:	SHA256 With RSA-Encryption
Serial Number:	0E7D75235CA83761577F4CCD24CD6D1D
Thumbprint:	B7402517EEAAC80AB04681186E8247BD7851CD0A
SHA256 / Certificate:	oNYJp+PENOh4qaHBvQZbjc8zqn7+4bEbx1zOXloEIIA=
SHA256 hex / Cert (DANE * 0 1):	e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA256 hex / PublicKey (DANE * 1 1):	8bb593a93be1d0e8a822bb887c547890c3e706aad2dab76254f97fb36b82fc26
SHA256 hex / Subject Public Key Information (SPKI):
SPKI checked via https://v1.pwnedkeys.com/spki-hash:	Check unknown. No result 404 / 200
OCSP - Url:	http://ocsp.digicert.cn
OCSP - must staple:	no
Certificate Transparency:	no
Enhanced Key Usage:

CN=DigiCert Global Root G2, OU=www.digicert.com, O=DigiCert Inc, C=US

01.08.2013

15.01.2038
expires in 4294 days

CN=DigiCert Global Root G2, OU=www.digicert.com, O=DigiCert Inc, C=US

01.08.2013

15.01.2038
expires in 4294 days

Keyalgorithm	RSA encryption (2048 bit)
Signatur:	SHA256 With RSA-Encryption
Serial Number:	033AF1E6A711A9A0BB2864B11D09FAE5
Thumbprint:	DF3C24F9BFD666761B268073FE06D1CC8D4F82A4
SHA256 / Certificate:	yzzLt2Ax5eATj43TmiP53kf/w15DwRRM6ifUalqxy18=
SHA256 hex / Cert (DANE * 0 1):	cb3ccbb76031e5e0138f8dd39a23f9de47ffc35e43c1144cea27d46a5ab1cb5f
SHA256 hex / PublicKey (DANE * 1 1):	8bb593a93be1d0e8a822bb887c547890c3e706aad2dab76254f97fb36b82fc26
SHA256 hex / Subject Public Key Information (SPKI):	8bb593a93be1d0e8a822bb887c547890c3e706aad2dab76254f97fb36b82fc26
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:

CN=DigiCert High Assurance EV Root CA, OU=www.digicert.com, O=DigiCert Inc, C=US

10.11.2006

10.11.2031
expires in 2036 days

CN=DigiCert High Assurance EV Root CA, OU=www.digicert.com, O=DigiCert Inc, C=US

10.11.2006

10.11.2031
expires in 2036 days

Keyalgorithm	RSA encryption (2048 bit)
Signatur:	SHA-1 with RSA Encryption
Serial Number:	02AC5C266A0B409B8F0B79F2AE462577
Thumbprint:	5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25
SHA256 / Certificate:	dDHl9MPBzkaQd08LYeBUQIg7qaAe0Aumq9eAbtOxGM8=
SHA256 hex / Cert (DANE * 0 1):	7431e5f4c3c1ce4690774f0b61e05440883ba9a01ed00ba6abd7806ed3b118cf
SHA256 hex / PublicKey (DANE * 1 1):	5a889647220e54d6bd8a16817224520bb5c78e58984bd570506388b9de0f075f
SHA256 hex / Subject Public Key Information (SPKI):	5a889647220e54d6bd8a16817224520bb5c78e58984bd570506388b9de0f075f
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)

No CertSpotter - CT-Log entries found

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=E5, O=Let's Encrypt, C=US				0	0	1
CN=E6, O=Let's Encrypt, C=US				0	0	1

CRT-Id	Issuer	not before	not after	Domain names	LE-Duplicate	next LE
18822159511 leaf cert	CN=E5, O=Let's Encrypt, C=US	2025-06-05 07:14:42	2025-09-03 07:14:41	*.studytutors.de, studenten-bilden-schueler.de, studytutors.de 3 entries
17700267280 leaf cert	CN=E6, O=Let's Encrypt, C=US	2025-04-06 08:04:08	2025-07-05 08:04:07	*.studytutors.de, studenten-bilden-schueler.de, studytutors.de 3 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://studytutors.de/	a		128		0			0	0	0
	img		10	22,215 Bytes	0	3	7	7	0	0	-7
	link	stylesheet	4	12,451 Bytes	0	4	0	0	0	0
	link	other	19	4,142 Bytes	0	1	0	0	0	0
	meta	other	5		0			0	0	0
	picture		9		0			0	0	0
	script		1	1,310 Bytes	1	1	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	∑	Status
https://studytutors.de/	a						1	ok
								ok


	a		#-a-href-mitmachen-kooperationspartner-wir-werden-unterstützt-durch-a-				1	ok
								ok


	a		#aktuelle-infos				1	ok
								ok


	a		#mitmachen				1	ok
								ok


	a		#spenden				1	ok
								ok


	a		#überblick				1	ok
								ok


	a		#unsere-werte				1	ok
								ok


	a		#wir-unterstützen-finanziell-benachteiligte-kinder-und-jugendliche-				1	ok
								ok


	a		#zahlen-und-fakten-				1	ok
								ok


	a		/				1	ok
								ok


	a		/aktuelles				1	ok
								ok


	a		/auszeichnungen				1	ok
								ok


	a		/blog				1	ok
								ok


	a		/bundesvorstand				1	ok
								ok


	a		/datenschutz				1	ok
								ok


	a		/ehemalige				1	ok
								ok


	a		/faq				2	ok
								ok


	a		/geschichte				1	ok
								ok


	a		/impressum				1	ok
								ok


	a		/kontakt				1	ok
								ok


	a		/lernmaterial				1	ok
								ok


	a		/mitmachen				1	ok
								ok


	a		/mitmachen/bundesvorstand				1	ok
								ok


	a		/mitmachen/kooperationspartner				2	ok
								ok


	a		/mitmachen/nachhilfelehrer				2	ok
								ok


	a		/mitmachen/schueler				1	ok
								ok


	a		/mitmachen/standortleiter				1	ok
								ok


	a		/mv				1	ok
								ok


	a		/presse				1	ok
								ok


	a		/satzung				2	ok
								ok


	a		/schutzkonzept				1	ok
								ok


	a		/signup-student				2	ok
								ok


	a		/spenden				3	ok
								ok


	a		/standorte				3	ok
								ok


	a		/standorte/aachen				1	ok
								ok


	a		/standorte/augsburg				1	ok
								ok


	a		/standorte/bayreuth				1	ok
								ok


	a		/standorte/berlin				1	ok
								ok


	a		/standorte/bielefeld				1	ok
								ok


	a		/standorte/bochum				1	ok
								ok


	a		/standorte/bonn				1	ok
								ok


	a		/standorte/braunschweig				1	ok
								ok


	a		/standorte/bremen				1	ok
								ok


	a		/standorte/chemnitz				1	ok
								ok


	a		/standorte/deggendorf				1	ok
								ok


	a		/standorte/dortmund				1	ok
								ok


	a		/standorte/dresden				1	ok
								ok


	a		/standorte/duesseldorf				1	ok
								ok


	a		/standorte/erlangen				1	ok
								ok


	a		/standorte/essen				1	ok
								ok


	a		/standorte/frankfurt				1	ok
								ok


	a		/standorte/freiburg				1	ok
								ok


	a		/standorte/gelsenkirchen				1	ok
								ok


	a		/standorte/giessen				1	ok
								ok


	a		/standorte/goettingen				1	ok
								ok


	a		/standorte/gruenden				2	ok
								ok


	a		/standorte/hamburg				1	ok
								ok


	a		/standorte/hannover				1	ok
								ok


	a		/standorte/heidelberg				1	ok
								ok


	a		/standorte/heilbronn				1	ok
								ok


	a		/standorte/ingolstadt				1	ok
								ok


	a		/standorte/jena				1	ok
								ok


	a		/standorte/kiel				1	ok
								ok


	a		/standorte/koeln				1	ok
								ok


	a		/standorte/landau				1	ok
								ok


	a		/standorte/leipzig				1	ok
								ok


	a		/standorte/magdeburg				1	ok
								ok


	a		/standorte/mainz				1	ok
								ok


	a		/standorte/mannheim				1	ok
								ok


	a		/standorte/marburg				1	ok
								ok


	a		/standorte/muenchen				1	ok
								ok


	a		/standorte/muenster				1	ok
								ok


	a		/standorte/nuernberg				1	ok
								ok


	a		/standorte/oldenburg				1	ok
								ok


	a		/standorte/potsdam				1	ok
								ok


	a		/standorte/regensburg				1	ok
								ok


	a		/standorte/rostock				1	ok
								ok


	a		/standorte/saarbruecken				1	ok
								ok


	a		/standorte/stuttgart				1	ok
								ok


	a		/standorte/trier				1	ok
								ok


	a		/standorte/ulm				1	ok
								ok


	a		/standorte/wolfenbuettel				1	ok
								ok


	a		/standorte/wuerzburg				1	ok
								ok


	a		/standorte/zwickau				1	ok
								ok


	a		/stipendium				2	ok
								ok


	a		/struktur				1	ok
								ok


	a		/tools				1	ok
								ok


	a		/ueber-uns				1	ok
								ok


	a		/umbenennung				1	ok
								ok


	a		/vereinbarungen				1	ok
								ok


	a		/vertrauensperson				1	ok
								ok


	a		/workshops				1	ok
								ok


	a		http://www.bartnitzky-burg.de/				1	ok
								ok


	a		https://airtable.com				1	ok
								ok


	a		https://airtable.com/shrwHaBWCL0P6o2fK				1	ok
								ok


	a		https://canva.com				1	ok
								ok


	a		https://contentful.com				1	ok
								ok


	a		https://deutsches-ehrenamt.de/				1	ok
								ok


	a		https://erasmus-plus.ec.europa.eu/projects/search/details/2022-1-DE04-KA210-YOU-000082740				2	ok
								ok


	a		https://facebook.com/StudentenBildenSchueler				1	ok
								ok


	a		https://freshfields.com				1	ok
								ok


	a		https://github.com/sbsev/site				1	ok
								ok


	a		https://gsuite.google.com				1	ok
								ok


	a		https://instagram.com/studytutors				1	ok
								ok


	a		https://netlify.com				1	ok
								ok


	a		https://nonprofit.microsoft.com/				1	ok
								ok


	a		https://sage.com/foundation				1	ok
								ok


	a		https://studytutors.de/mitmachen/schueler				1	ok
								ok


	a		https://studytutors.de/stipendium				1	ok
								ok


	a		https://twitter.com/sbs_germany				1	ok
								ok


	a		https://wiki.studytutors.de/				1	ok
								ok


	a		https://www.bundesjustizamt.de/DE/Themen/Buergerdienste/BZR/Inland/FAQ_node.html				1	ok
								ok


	a		https://www.netcup.com/de/				1	ok
								ok


	a		https://www.netlify.com/legal/open-source-policy				1	ok
								ok


	a		https://www.thehgfoundation.com/				1	ok
								ok


	a		https://youtube.com/c/StudentenbildenSchüler				1	ok
								ok


	img	src	//images.ctfassets.net/75kptesf4g82/27nP7rSoQfjcWkAifddvx9/d0fca93332db65bd6e4754e35f3385d4/Deutsches_Ehrenamt_eV.svg		200		1	ok
	alt: deutschesEhrenamt Logo			image/svg+xml missing X-Content-Type-Options nosniff				ok
	Cache-Control: max-age=31536000 with long duration found.			Compression (gzip): 3415/10408 Bytes
	ETag: W/"1e78937bf3a3831110f418c480bf5ac6"
	Server-Header Access-Control-Allow-Origin: *			Cross-Origin Resource Sharing (CORS) supported
	missing crossorigin=anonymous\|use-credentials and integrity - attribute, possible hash-values: sha256-dwaAyZ1oePc1PbFaiz/x/GA5PyMvbgiPx4rl0jSgjZY= sha384-Apx58z2S2lMH/U5V65a6BRh68vAfOJYBaLEGGQs02ViybY4m26nlJfbV/xvNqc/n sha512-mVyjzvNspHtnnWpEippM2HyWBDDhKXNAquUbhstN0S+pOfeWF6bl5mMjevoe0ICQZoVWeFTLuu4eb2nFZgEeNw== <img src="//images.ctfassets.net/75kptesf4g82/27nP7rSoQfjcWkAifddvx9/d0fca93332db65bd6e4754e35f3385d4/Deutsches_Ehrenamt_eV.svg" crossorigin="anonymous" integrity="sha256-dwaAyZ1oePc1PbFaiz/x/GA5PyMvbgiPx4rl0jSgjZY=" />

	img	src	//images.ctfassets.net/75kptesf4g82/2uA4A6wih2ci2q6WgWK0GQ/6c088e08298d732bd9e0ffb3bdcb65e2/g_suite.svg		200		1	ok
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		• img
			//images.ctfassets.net/75kptesf4g82/5VnzrOHM1M1FVWHH03ko7Y/aab6d2f8358c48a2a46351310159376d/netcup_logo_RGB_color.jpg?w=900&q=80		200		1	ok
	alt: Netcup-Logo			image/jpeg missing X-Content-Type-Options nosniff				ok
		Cache-Control: max-age=31536000 with long duration found.		No Compression - 18240 Bytes
	ETag: "f822c400690d238f20f0546582f5d08e"
	Server-Header Access-Control-Allow-Origin: *			Cross-Origin Resource Sharing (CORS) supported
	missing crossorigin=anonymous\|use-credentials and integrity - attribute, possible hash-values: sha256-+6dYv3A9bdjBTOcjqw7l7+y33m7XQFHa8dcZ5jPjnNo= sha384-+f9ZEfuCCP1VBcX+cuOqimGzDwDNPfdY0dQQw3YKVIafa3iLXQ7KTHTDYxNPPvPu sha512-l7nQDEfAMmV9cLFinr6c2h4WGa8+18+9LuprfyHBh/HMkwiBY3PrDOf6GmgsPfM5Y0vTpgZRrl0lGfQAWNYPpA== <img src="//images.ctfassets.net/75kptesf4g82/5VnzrOHM1M1FVWHH03ko7Y/aab6d2f8358c48a2a46351310159376d/netcup_logo_RGB_color.jpg?w=900&q=80" crossorigin="anonymous" integrity="sha256-+6dYv3A9bdjBTOcjqw7l7+y33m7XQFHa8dcZ5jPjnNo=" />

	script	src	/js/script.js		200		1	Problems with Content-Type - Header - see details
	defer attribute found			application/javascript X-Content-Type-Options nosniff found		This Combination of MediaType "application" and MediaSubType "javascript" is obsolete. Don't use it. See https://www.iana.org/assignments/media-types/media-types.xhtml to find a correct Combination. Use "text/javascript" instead.		Problems with Content-Type - Header - see details
				Compression (br): 1310/2966 Bytes
	local SRI possible, possible hash-values: sha256-tERYV4Xvift9/EIk9auaq78X16lnj7xkYoX44hXA91c= sha384-PK9m48bV5v2ZyIZwN6iFX0jfWNZhswC688kuAzXHwmzq/tMxsdI6aAJ4zKN+xSH0 sha512-53fIUAHUGJvAx2i0sjSle06eOUmh3v0N88AFlc/R/4g2riFhdTEqXshTp5L5Igy/4UUJUFjXyujEnxnp476pBQ== <script src="/js/script.js" crossorigin="anonymous" integrity="sha256-tERYV4Xvift9/EIk9auaq78X16lnj7xkYoX44hXA91c=" />

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

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

Summary
	Good: No non-document-errors
	22 errors
	2 warnings
1.	error	When the `srcset` attribute has any image candidate string with a width descriptor, the `sizes` attribute must also be specified.	18
2.	error	Bad value `1612px` for attribute `width` on element `img`: Expected a digit but saw `p` instead.	1
3.	error	Bad value `163px` for attribute `height` on element `img`: Expected a digit but saw `p` instead.	1
4.	error	Element `legend` not allowed as child of element `div` in this context. (Suppressing further errors from this subtree.)	1
5.	error	Stray end tag `section`.	1
6.	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.	2
Details
	Type	Message + Sample
1	error	Bad value `1612px` for attribute `width` on element `img`: Expected a digit but saw `p` instead.
		From line 52, column 12650 to line 52, column 12748
		te-e4v3u"><img src="/logo-name-de.svg" alt="StudyTutors" width="1612px" height="163px" class="svelte-jx6661"></h1>
2	error	Bad value `163px` for attribute `height` on element `img`: Expected a digit but saw `p` instead.
		From line 52, column 12650 to line 52, column 12748
		te-e4v3u"><img src="/logo-name-de.svg" alt="StudyTutors" width="1612px" height="163px" class="svelte-jx6661"></h1>
3	error	Element `legend` not allowed as child of element `div` in this context. (Suppressing further errors from this subtree.)
		From line 52, column 14200 to line 52, column 14230
		e"></div> <legend class="svelte-1j962ne"><div c
4	error	When the `srcset` attribute has any image candidate string with a width descriptor, the `sizes` attribute must also be specified.
		From line 109, column 9 to line 109, column 467
		> <source srcset="//images.ctfassets.net/75kptesf4g82/4aZJKPabeUa2qoiuWSa0mU/9c033e17f88b775b378bd48805ea7285/14022017-4.jpg?w=900&q=80&fit=fill&fm=webp 900w, //images.ctfassets.net/75kptesf4g82/4aZJKPabeUa2qoiuWSa0mU/9c033e17f88b775b378bd48805ea7285/14022017-4.jpg?w=600&q=80&fit=fill&fm=webp 600w, //images.ctfassets.net/75kptesf4g82/4aZJKPabeUa2qoiuWSa0mU/9c033e17f88b775b378bd48805ea7285/14022017-4.jpg?w=400&q=80&fit=fill&fm=webp 400w" type="image/webp" />
5	error	When the `srcset` attribute has any image candidate string with a width descriptor, the `sizes` attribute must also be specified.
		From line 110, column 9 to line 110, column 425
		> <source srcset="//images.ctfassets.net/75kptesf4g82/4aZJKPabeUa2qoiuWSa0mU/9c033e17f88b775b378bd48805ea7285/14022017-4.jpg?w=900&q=80&fit=fill 900w, //images.ctfassets.net/75kptesf4g82/4aZJKPabeUa2qoiuWSa0mU/9c033e17f88b775b378bd48805ea7285/14022017-4.jpg?w=600&q=80&fit=fill 600w, //images.ctfassets.net/75kptesf4g82/4aZJKPabeUa2qoiuWSa0mU/9c033e17f88b775b378bd48805ea7285/14022017-4.jpg?w=400&q=80&fit=fill 400w" />
6	error	Stray end tag `section`.
		From line 113, column 1 to line 113, column 10
		ture></p> </section> <sec
7	error	When the `srcset` attribute has any image candidate string with a width descriptor, the `sizes` attribute must also be specified.
		From line 150, column 9 to line 150, column 467
		> <source srcset="//images.ctfassets.net/75kptesf4g82/5hZucPrRIE9BTrlkFNSARi/9939ce065d4532209096118a139ba4e7/29032017-6.jpg?w=900&q=80&fit=fill&fm=webp 900w, //images.ctfassets.net/75kptesf4g82/5hZucPrRIE9BTrlkFNSARi/9939ce065d4532209096118a139ba4e7/29032017-6.jpg?w=600&q=80&fit=fill&fm=webp 600w, //images.ctfassets.net/75kptesf4g82/5hZucPrRIE9BTrlkFNSARi/9939ce065d4532209096118a139ba4e7/29032017-6.jpg?w=400&q=80&fit=fill&fm=webp 400w" type="image/webp" />
8	error	When the `srcset` attribute has any image candidate string with a width descriptor, the `sizes` attribute must also be specified.
		From line 151, column 9 to line 151, column 425
		> <source srcset="//images.ctfassets.net/75kptesf4g82/5hZucPrRIE9BTrlkFNSARi/9939ce065d4532209096118a139ba4e7/29032017-6.jpg?w=900&q=80&fit=fill 900w, //images.ctfassets.net/75kptesf4g82/5hZucPrRIE9BTrlkFNSARi/9939ce065d4532209096118a139ba4e7/29032017-6.jpg?w=600&q=80&fit=fill 600w, //images.ctfassets.net/75kptesf4g82/5hZucPrRIE9BTrlkFNSARi/9939ce065d4532209096118a139ba4e7/29032017-6.jpg?w=400&q=80&fit=fill 400w" />
9	error	When the `srcset` attribute has any image candidate string with a width descriptor, the `sizes` attribute must also be specified.
		From line 205, column 9 to line 205, column 494
		> <source srcset="//images.ctfassets.net/75kptesf4g82/6n6ScWgs1g0QZAmmtzPSzk/c0e0063d9d1db8a359ad829cb17a8269/TheHgFoundation__1_.png?w=900&q=80&fit=fill&fm=webp 900w, //images.ctfassets.net/75kptesf4g82/6n6ScWgs1g0QZAmmtzPSzk/c0e0063d9d1db8a359ad829cb17a8269/TheHgFoundation__1_.png?w=600&q=80&fit=fill&fm=webp 600w, //images.ctfassets.net/75kptesf4g82/6n6ScWgs1g0QZAmmtzPSzk/c0e0063d9d1db8a359ad829cb17a8269/TheHgFoundation__1_.png?w=400&q=80&fit=fill&fm=webp 400w" type="image/webp" />
10	error	When the `srcset` attribute has any image candidate string with a width descriptor, the `sizes` attribute must also be specified.
		From line 206, column 9 to line 206, column 452
		> <source srcset="//images.ctfassets.net/75kptesf4g82/6n6ScWgs1g0QZAmmtzPSzk/c0e0063d9d1db8a359ad829cb17a8269/TheHgFoundation__1_.png?w=900&q=80&fit=fill 900w, //images.ctfassets.net/75kptesf4g82/6n6ScWgs1g0QZAmmtzPSzk/c0e0063d9d1db8a359ad829cb17a8269/TheHgFoundation__1_.png?w=600&q=80&fit=fill 600w, //images.ctfassets.net/75kptesf4g82/6n6ScWgs1g0QZAmmtzPSzk/c0e0063d9d1db8a359ad829cb17a8269/TheHgFoundation__1_.png?w=400&q=80&fit=fill 400w" />
11	error	When the `srcset` attribute has any image candidate string with a width descriptor, the `sizes` attribute must also be specified.
		From line 220, column 9 to line 220, column 464
		> <source srcset="//images.ctfassets.net/75kptesf4g82/7fEs2HjWpCR5klLAQmFpYY/8bedf8a71fb34aa592c058a3402cbf2a/microsoft.png?w=900&q=80&fit=fill&fm=webp 900w, //images.ctfassets.net/75kptesf4g82/7fEs2HjWpCR5klLAQmFpYY/8bedf8a71fb34aa592c058a3402cbf2a/microsoft.png?w=600&q=80&fit=fill&fm=webp 600w, //images.ctfassets.net/75kptesf4g82/7fEs2HjWpCR5klLAQmFpYY/8bedf8a71fb34aa592c058a3402cbf2a/microsoft.png?w=400&q=80&fit=fill&fm=webp 400w" type="image/webp" />
12	error	When the `srcset` attribute has any image candidate string with a width descriptor, the `sizes` attribute must also be specified.
		From line 221, column 9 to line 221, column 422
		> <source srcset="//images.ctfassets.net/75kptesf4g82/7fEs2HjWpCR5klLAQmFpYY/8bedf8a71fb34aa592c058a3402cbf2a/microsoft.png?w=900&q=80&fit=fill 900w, //images.ctfassets.net/75kptesf4g82/7fEs2HjWpCR5klLAQmFpYY/8bedf8a71fb34aa592c058a3402cbf2a/microsoft.png?w=600&q=80&fit=fill 600w, //images.ctfassets.net/75kptesf4g82/7fEs2HjWpCR5klLAQmFpYY/8bedf8a71fb34aa592c058a3402cbf2a/microsoft.png?w=400&q=80&fit=fill 400w" />
13	error	When the `srcset` attribute has any image candidate string with a width descriptor, the `sizes` attribute must also be specified.
		From line 231, column 9 to line 231, column 470
		> <source srcset="//images.ctfassets.net/75kptesf4g82/3NWcHNM2EvYn7964jLOnQH/6257e93c61925296503eec29c31ddd4b/Freshfields.png?w=900&q=80&fit=fill&fm=webp 900w, //images.ctfassets.net/75kptesf4g82/3NWcHNM2EvYn7964jLOnQH/6257e93c61925296503eec29c31ddd4b/Freshfields.png?w=600&q=80&fit=fill&fm=webp 600w, //images.ctfassets.net/75kptesf4g82/3NWcHNM2EvYn7964jLOnQH/6257e93c61925296503eec29c31ddd4b/Freshfields.png?w=400&q=80&fit=fill&fm=webp 400w" type="image/webp" />
14	error	When the `srcset` attribute has any image candidate string with a width descriptor, the `sizes` attribute must also be specified.
		From line 232, column 9 to line 232, column 428
		> <source srcset="//images.ctfassets.net/75kptesf4g82/3NWcHNM2EvYn7964jLOnQH/6257e93c61925296503eec29c31ddd4b/Freshfields.png?w=900&q=80&fit=fill 900w, //images.ctfassets.net/75kptesf4g82/3NWcHNM2EvYn7964jLOnQH/6257e93c61925296503eec29c31ddd4b/Freshfields.png?w=600&q=80&fit=fill 600w, //images.ctfassets.net/75kptesf4g82/3NWcHNM2EvYn7964jLOnQH/6257e93c61925296503eec29c31ddd4b/Freshfields.png?w=400&q=80&fit=fill 400w" />
15	error	When the `srcset` attribute has any image candidate string with a width descriptor, the `sizes` attribute must also be specified.
		From line 238, column 9 to line 238, column 482
		> <source srcset="//images.ctfassets.net/75kptesf4g82/lKcg6Ws0N191jsDC4PwX0/451315aefbca213007e5996b6979866b/lathamandwatkins.png?w=900&q=80&fit=fill&fm=webp 900w, //images.ctfassets.net/75kptesf4g82/lKcg6Ws0N191jsDC4PwX0/451315aefbca213007e5996b6979866b/lathamandwatkins.png?w=600&q=80&fit=fill&fm=webp 600w, //images.ctfassets.net/75kptesf4g82/lKcg6Ws0N191jsDC4PwX0/451315aefbca213007e5996b6979866b/lathamandwatkins.png?w=400&q=80&fit=fill&fm=webp 400w" type="image/webp" />
16	error	When the `srcset` attribute has any image candidate string with a width descriptor, the `sizes` attribute must also be specified.
		From line 239, column 9 to line 239, column 440
		> <source srcset="//images.ctfassets.net/75kptesf4g82/lKcg6Ws0N191jsDC4PwX0/451315aefbca213007e5996b6979866b/lathamandwatkins.png?w=900&q=80&fit=fill 900w, //images.ctfassets.net/75kptesf4g82/lKcg6Ws0N191jsDC4PwX0/451315aefbca213007e5996b6979866b/lathamandwatkins.png?w=600&q=80&fit=fill 600w, //images.ctfassets.net/75kptesf4g82/lKcg6Ws0N191jsDC4PwX0/451315aefbca213007e5996b6979866b/lathamandwatkins.png?w=400&q=80&fit=fill 400w" />
17	error	When the `srcset` attribute has any image candidate string with a width descriptor, the `sizes` attribute must also be specified.
		From line 247, column 9 to line 247, column 479
		> <source srcset="//images.ctfassets.net/75kptesf4g82/1Jy0Uzc4omYP59eBUQjAiD/577d58c43feb281bd439d0fbf05bc9af/Flag_of_Europe.png?w=900&q=80&fit=fill&fm=webp 900w, //images.ctfassets.net/75kptesf4g82/1Jy0Uzc4omYP59eBUQjAiD/577d58c43feb281bd439d0fbf05bc9af/Flag_of_Europe.png?w=600&q=80&fit=fill&fm=webp 600w, //images.ctfassets.net/75kptesf4g82/1Jy0Uzc4omYP59eBUQjAiD/577d58c43feb281bd439d0fbf05bc9af/Flag_of_Europe.png?w=400&q=80&fit=fill&fm=webp 400w" type="image/webp" />
18	error	When the `srcset` attribute has any image candidate string with a width descriptor, the `sizes` attribute must also be specified.
		From line 248, column 9 to line 248, column 437
		> <source srcset="//images.ctfassets.net/75kptesf4g82/1Jy0Uzc4omYP59eBUQjAiD/577d58c43feb281bd439d0fbf05bc9af/Flag_of_Europe.png?w=900&q=80&fit=fill 900w, //images.ctfassets.net/75kptesf4g82/1Jy0Uzc4omYP59eBUQjAiD/577d58c43feb281bd439d0fbf05bc9af/Flag_of_Europe.png?w=600&q=80&fit=fill 600w, //images.ctfassets.net/75kptesf4g82/1Jy0Uzc4omYP59eBUQjAiD/577d58c43feb281bd439d0fbf05bc9af/Flag_of_Europe.png?w=400&q=80&fit=fill 400w" />
19	error	When the `srcset` attribute has any image candidate string with a width descriptor, the `sizes` attribute must also be specified.
		From line 254, column 9 to line 254, column 467
		> <source srcset="//images.ctfassets.net/75kptesf4g82/4r2HBPJ6E9oyObcd6D7WZL/b8201f03fea55e57d03d1f6491ae4c00/logo_tommy.png?w=900&q=80&fit=fill&fm=webp 900w, //images.ctfassets.net/75kptesf4g82/4r2HBPJ6E9oyObcd6D7WZL/b8201f03fea55e57d03d1f6491ae4c00/logo_tommy.png?w=600&q=80&fit=fill&fm=webp 600w, //images.ctfassets.net/75kptesf4g82/4r2HBPJ6E9oyObcd6D7WZL/b8201f03fea55e57d03d1f6491ae4c00/logo_tommy.png?w=400&q=80&fit=fill&fm=webp 400w" type="image/webp" />
20	error	When the `srcset` attribute has any image candidate string with a width descriptor, the `sizes` attribute must also be specified.
		From line 255, column 9 to line 255, column 425
		> <source srcset="//images.ctfassets.net/75kptesf4g82/4r2HBPJ6E9oyObcd6D7WZL/b8201f03fea55e57d03d1f6491ae4c00/logo_tommy.png?w=900&q=80&fit=fill 900w, //images.ctfassets.net/75kptesf4g82/4r2HBPJ6E9oyObcd6D7WZL/b8201f03fea55e57d03d1f6491ae4c00/logo_tommy.png?w=600&q=80&fit=fill 600w, //images.ctfassets.net/75kptesf4g82/4r2HBPJ6E9oyObcd6D7WZL/b8201f03fea55e57d03d1f6491ae4c00/logo_tommy.png?w=400&q=80&fit=fill 400w" />
21	error	When the `srcset` attribute has any image candidate string with a width descriptor, the `sizes` attribute must also be specified.
		From line 261, column 9 to line 261, column 500
		> <source srcset="//images.ctfassets.net/75kptesf4g82/5VnzrOHM1M1FVWHH03ko7Y/aab6d2f8358c48a2a46351310159376d/netcup_logo_RGB_color.jpg?w=900&q=80&fit=fill&fm=webp 900w, //images.ctfassets.net/75kptesf4g82/5VnzrOHM1M1FVWHH03ko7Y/aab6d2f8358c48a2a46351310159376d/netcup_logo_RGB_color.jpg?w=600&q=80&fit=fill&fm=webp 600w, //images.ctfassets.net/75kptesf4g82/5VnzrOHM1M1FVWHH03ko7Y/aab6d2f8358c48a2a46351310159376d/netcup_logo_RGB_color.jpg?w=400&q=80&fit=fill&fm=webp 400w" type="image/webp" />
22	error	When the `srcset` attribute has any image candidate string with a width descriptor, the `sizes` attribute must also be specified.
		From line 262, column 9 to line 262, column 458
		> <source srcset="//images.ctfassets.net/75kptesf4g82/5VnzrOHM1M1FVWHH03ko7Y/aab6d2f8358c48a2a46351310159376d/netcup_logo_RGB_color.jpg?w=900&q=80&fit=fill 900w, //images.ctfassets.net/75kptesf4g82/5VnzrOHM1M1FVWHH03ko7Y/aab6d2f8358c48a2a46351310159376d/netcup_logo_RGB_color.jpg?w=600&q=80&fit=fill 600w, //images.ctfassets.net/75kptesf4g82/5VnzrOHM1M1FVWHH03ko7Y/aab6d2f8358c48a2a46351310159376d/netcup_logo_RGB_color.jpg?w=400&q=80&fit=fill 400w" />
23	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 52, column 12964 to line 52, column 13023
		--></h2> <section style="white-space: nowrap;" class="svelte-jx6661"><div s
24	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 201, column 12 to line 201, column 33
		</h2><section class="grid"> <p>

13. Nameserver - IP-Adresses

Required Root-climbing DNS-Queries to find ip addresses of all Name Servers: dns01.manitu.net, dns02.manitu.net

QNr.	Domain	Type	NS used
1	net	NS	k.root-servers.net (2001:7fd::1)
	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	dns01.manitu.net: 217.11.48.200, 2a00:1828:1000:1148::2	NS	a.gtld-servers.net (2001:503:a83e::2:30)
	Answer: dns02.manitu.net 217.11.49.200, 2a00:1828:1000:1149::2
	Answer: dns04.manitu.net 202.61.237.76, 2a03:4000:5c:d89::1
	Answer: dns52.cloudns.net 185.136.97.15, 2a06:fb00:1::2:15
	Answer: dns53.cloudns.net 185.136.98.15, 2a06:fb00:1::3:15
3	de	NS	i.root-servers.net (2001:7fe::53)
	Answer: a.nic.de, f.nic.de, l.de.net, n.de.net, s.de.net, z.nic.de
4	dns03.manitu.de	NS	a.nic.de (2001:678:2::53)
	Answer: dns01.manitu.net, dns02.manitu.net, dns03.manitu.net, dns04.manitu.net, dns52.cloudns.net, dns53.cloudns.net
5	dns03.manitu.net	NS	a.gtld-servers.net (2001:503:a83e::2:30)
	Answer: dns01.manitu.net, dns02.manitu.net, dns03.manitu.de, dns04.manitu.net, dns52.cloudns.net, dns53.cloudns.net
	Answer: dns01.manitu.net 217.11.48.200, 2a00:1828:1000:1148::2
	Answer: dns02.manitu.net 217.11.49.200, 2a00:1828:1000:1149::2
	Answer: dns04.manitu.net 202.61.237.76, 2a03:4000:5c:d89::1
	Answer: dns52.cloudns.net 185.136.97.15, 2a06:fb00:1::2:15
	Answer: dns53.cloudns.net 185.136.98.15, 2a06:fb00:1::3:15
6	dns03.manitu.de: 217.11.50.200	A	dns01.manitu.net (2a00:1828:1000:1148::2)
7	dns03.manitu.de: 2a00:1828:1000:1150::2	AAAA	dns01.manitu.net (2a00:1828:1000:1148::2)
8	dns03.manitu.net: 217.11.50.200	A	dns01.manitu.net (2a00:1828:1000:1148::2)
9	dns03.manitu.net: 2a00:1828:1000:1150::2	AAAA	dns01.manitu.net (2a00:1828:1000:1148::2)

14. CAA - Entries

Domainname	Value	∑ Queries
www.studenten-bilden-schueler.de	no CAA entry found	1
studenten-bilden-schueler.de	no CAA entry found	1
de	no CAA entry found	1

15. TXT - Entries

Domainname	TXT Entry	Status	∑ Queries
studenten-bilden-schueler.de	google-site-verification=cwTMUSNop8co74Bs2qLOUioSP0-MQCRGdhIdmyVjWp4	ok	1
studenten-bilden-schueler.de	v=spf1 include:_spf.google.com include:servers.mcsv.net ?all	ok	1
www.studenten-bilden-schueler.de		ok	1
_acme-challenge.studenten-bilden-schueler.de		missing entry or wrong length	1
_acme-challenge.www.studenten-bilden-schueler.de		missing entry or wrong length	1
_acme-challenge.studenten-bilden-schueler.de.studenten-bilden-schueler.de		perhaps wrong	1
_acme-challenge.www.studenten-bilden-schueler.de.studenten-bilden-schueler.de		perhaps wrong	1
_acme-challenge.www.studenten-bilden-schueler.de.www.studenten-bilden-schueler.de		perhaps wrong	1

16. DomainService - Entries

Type		Domain	Pref	Value	DNS-error	num Answers	Status
MX		studenten-bilden-schueler.de	1	aspmx.l.google.com	0	5	ok
	A			74.125.71.27	0	1	ok
	AAAA			2a00:1450:400c:c1d::1b	0	1	ok
	CNAME				0	0	ok
MX		studenten-bilden-schueler.de	5	alt1.aspmx.l.google.com	0	5	ok
	A			192.178.156.27	0	1	ok
	AAAA			2a00:1450:4013:c1c::1b	0	1	ok
	CNAME				0	0	ok
MX		studenten-bilden-schueler.de	5	alt2.aspmx.l.google.com	0	5	ok
	A			142.250.147.27	0	1	ok
	AAAA			2a00:1450:4025:c01::1b	0	1	ok
	CNAME				0	0	ok
MX		studenten-bilden-schueler.de	10	alt3.aspmx.l.google.com	0	5	ok
	A			74.125.131.27	0	1	ok
	AAAA			2a00:1450:4010:c0e::1b	0	1	ok
	CNAME				0	0	ok
MX		studenten-bilden-schueler.de	10	alt4.aspmx.l.google.com	0	5	ok
	A			142.250.4.27	0	1	ok
	AAAA			2404:6800:4003:c06::1a	0	1	ok
	CNAME				0	0	ok
SPF	TXT	studenten-bilden-schueler.de		v=spf1 include:_spf.google.com include:servers.mcsv.net ?all			ok
	TXT	_spf.google.com		v=spf1 include:_netblocks.google.com include:_netblocks2.google.com include:_netblocks3.google.com ~all			ok
	TXT	servers.mcsv.net		v=spf1 ip4:205.201.128.0/20 ip4:198.2.128.0/18 ip4:148.105.8.0/21 -all			ok
	TXT	_netblocks.google.com		v=spf1 ip4:74.125.0.0/16 ip4:173.194.0.0/16 ip4:209.85.128.0/17 ip4:216.58.192.0/19 ip4:216.239.32.0/19 ~all			ok
	TXT	_netblocks2.google.com		v=spf1 ip6:2001:4860:4000::/36 ip6:2404:6800:4000::/36 ip6:2607:f8b0:4000::/36 ip6:2800:3f0:4000::/36 ip6:2a00:1450:4000::/36 ip6:2c0f:fb50:4000::/36 ~all			ok
	TXT	_netblocks3.google.com		v=spf1 ip4:172.217.0.0/20 ip4:172.217.32.0/20 ip4:172.217.128.0/19 ip4:172.217.160.0/20 ip4:172.217.192.0/19 ip4:172.253.56.0/21 ip4:172.253.112.0/20 ip4:108.177.96.0/20 ~all			ok
_dmarc	TXT	_dmarc.studenten-bilden-schueler.de		v=DMARC1; p=reject			ok

17. Cipher Suites

Summary
Domain	IP	Port	num Ciphers	time	Std.Protocol	Forward Secrecy
studenten-bilden-schueler.de	75.2.60.5	443	3 Ciphers	26.59 sec		0 without, 3 FS	100.00 %
www.studenten-bilden-schueler.de	75.2.60.5	443	3 Ciphers	27.93 sec		0 without, 3 FS	100.00 %
Complete		2	6 Ciphers 3.00 Ciphers/Check	54.51 sec	27.26 sec/Check	0 without, 6 FS	100.00 %

Details
Domain	IP	Port	Cipher (OpenSsl / IANA)
studenten-bilden-schueler.de	75.2.60.5	443	ECDHE-ECDSA-CHACHA20-POLY1305		(Recommended)	TLSv1.2	0xCC,0xA9	FS
3 Ciphers, 26.59 sec			TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256
			ECDH		ECDSA	CHACHA20/POLY1305(256)	AEAD
			ECDHE-ECDSA-AES256-GCM-SHA384		(Recommended)	TLSv1.2	0xC0,0x2C	FS
			TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
			ECDH		ECDSA	AESGCM(256)	AEAD
			ECDHE-ECDSA-AES128-GCM-SHA256		(Recommended)	TLSv1.2	0xC0,0x2B	FS
			TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
			ECDH		ECDSA	AESGCM(128)	AEAD
www.studenten-bilden-schueler.de	75.2.60.5	443	ECDHE-ECDSA-CHACHA20-POLY1305		(Recommended)	TLSv1.2	0xCC,0xA9	FS
3 Ciphers, 27.93 sec			TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256
			ECDH		ECDSA	CHACHA20/POLY1305(256)	AEAD
			ECDHE-ECDSA-AES256-GCM-SHA384		(Recommended)	TLSv1.2	0xC0,0x2C	FS
			TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
			ECDH		ECDSA	AESGCM(256)	AEAD
			ECDHE-ECDSA-AES128-GCM-SHA256		(Recommended)	TLSv1.2	0xC0,0x2B	FS
			TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
			ECDH		ECDSA	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=65ee751e-5192-4053-b50a-68230ba7e7cd

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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