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

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Shortcuts: 1. IP-Addresses | 2. DNSSEC | 3. Name Servers | 4. SOA-Entries | 5. Screenshots | 6. Url-Checks | 7. Comments | 8. Connections | 9. Certificates | 10. CT-Logs | 11. Html-Content | 12. Html-Parsing | 13. NameServer-IPAddresses | 14. CAA | 15. TXT | 16. DomainServiceEntries | 17. Cipher Suites | 18. Portchecks |

 

B

 

Missing HSTS or Cookie-warnings

 

Checked:
05.11.2025 08:08:36

 

Older results

No older results found

 

1. IP-Addresses

HostTypeIP-Addressis auth.∑ Queries∑ Timeout
vertreter1.siebenfoercher.it
CNAME
gtel2.siebenfoercher.it
yes
1
0

A
45.135.68.147
Lana/Trentino-Alto Adige/Italy (IT) - Telmekom SRL
Hostname: gtel2.siebenfoercher.it
yes


www.vertreter1.siebenfoercher.it

Name Error
yes
1
0
*.siebenfoercher.it
A
Name Error
yes



AAAA
Name Error
yes



CNAME
Name Error
yes


*.vertreter1.siebenfoercher.it
A
Name Error
yes



AAAA
Name Error
yes



CNAME
Name Error
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 61809, Flags 256






1 RRSIG RR to validate DNSKEY RR found






RRSIG-Owner (root), Algorithm: 8, 0 Labels, original TTL: 172800 sec, Signature-expiration: 21.11.2025, 00:00:00 +, Signature-Inception: 31.10.2025, 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: it

it
1 DS RR in the parent zone found






DS with Algorithm 10, KeyTag 41901, DigestType 2 and Digest R/f3uiHkhZH2Fy7tE+NbZrk62fKID8m62mT2jOKOu5A=






2 RRSIG RR to validate DS RR found






RRSIG-Owner it., Algorithm: 8, 1 Labels, original TTL: 86400 sec, Signature-expiration: 18.11.2025, 05:00:00 +, Signature-Inception: 05.11.2025, 04:00:00 +, KeyTag 61809, Signer-Name: (root)






• Status: Good - Algorithmus 8 and DNSKEY with KeyTag 61809 used to validate the DS RRSet in the parent zone






2 DNSKEY RR found






Public Key with Algorithm 10, KeyTag 18395, Flags 256






Public Key with Algorithm 10, KeyTag 41901, Flags 257 (SEP = Secure Entry Point)






1 RRSIG RR to validate DNSKEY RR found






RRSIG-Owner it., Algorithm: 10, 1 Labels, original TTL: 86400 sec, Signature-expiration: 05.12.2025, 06:03:53 +, Signature-Inception: 05.11.2025, 06:03:53 +, KeyTag 41901, Signer-Name: it






• Status: Good - Algorithmus 10 and DNSKEY with KeyTag 41901 used to validate the DNSKEY RRSet






• Status: Valid Chain of trust. Parent-DS with Algorithm 10, KeyTag 41901, DigestType 2 and Digest "R/f3uiHkhZH2Fy7tE+NbZrk62fKID8m62mT2jOKOu5A=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone



Zone: siebenfoercher.it

siebenfoercher.it
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 "9r37u8sktc9g5phnbb6ggkvjp469d7pn" between the hashed NSEC3-owner "9r317v25g63uq4vd6elsfvbho1opfpfu" and the hashed NextOwner "9r3sl2sif95b9cfqbarsihseemi98t20". So the parent zone confirmes the not-existence of a DS RR.
Bitmap: NS, DS, RRSIG Validated: RRSIG-Owner 9r317v25g63uq4vd6elsfvbho1opfpfu.it., Algorithm: 10, 2 Labels, original TTL: 3600 sec, Signature-expiration: 05.12.2025, 06:03:53 +, Signature-Inception: 05.11.2025, 06:03:53 +, KeyTag 18395, Signer-Name: it






DS-Query in the parent zone sends valid NSEC3 RR with the Hash "rs1n3n7m54pdem5eunv9npkh3b6cgpjc" as Owner. That's the Hash of "it" with the NextHashedOwnerName "rs1pg43s35r5v1kf1v10ft5sp409iubv". So that domain name is the Closest Encloser of "siebenfoercher.it". Opt-Out: True.
Bitmap: NS, SOA, RRSIG, DNSKEY, NSEC3PARAM Validated: RRSIG-Owner rs1n3n7m54pdem5eunv9npkh3b6cgpjc.it., Algorithm: 10, 2 Labels, original TTL: 3600 sec, Signature-expiration: 05.12.2025, 06:03:53 +, Signature-Inception: 05.11.2025, 06:03:53 +, KeyTag 18395, Signer-Name: it






0 DNSKEY RR found









Zone: vertreter1.siebenfoercher.it

vertreter1.siebenfoercher.it
0 DS RR in the parent zone found



Zone: www.vertreter1.siebenfoercher.it

www.vertreter1.siebenfoercher.it
0 DS RR in the parent zone found



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 61809, Flags 256






1 RRSIG RR to validate DNSKEY RR found






RRSIG-Owner (root), Algorithm: 8, 0 Labels, original TTL: 172800 sec, Signature-expiration: 21.11.2025, 00:00:00 +, Signature-Inception: 31.10.2025, 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: it

it
1 DS RR in the parent zone found






DS with Algorithm 10, KeyTag 41901, DigestType 2 and Digest R/f3uiHkhZH2Fy7tE+NbZrk62fKID8m62mT2jOKOu5A=






2 RRSIG RR to validate DS RR found






RRSIG-Owner it., Algorithm: 8, 1 Labels, original TTL: 86400 sec, Signature-expiration: 18.11.2025, 05:00:00 +, Signature-Inception: 05.11.2025, 04:00:00 +, KeyTag 61809, Signer-Name: (root)






• Status: Good - Algorithmus 8 and DNSKEY with KeyTag 61809 used to validate the DS RRSet in the parent zone






2 DNSKEY RR found






Public Key with Algorithm 10, KeyTag 18395, Flags 256






Public Key with Algorithm 10, KeyTag 41901, Flags 257 (SEP = Secure Entry Point)






1 RRSIG RR to validate DNSKEY RR found






RRSIG-Owner it., Algorithm: 10, 1 Labels, original TTL: 86400 sec, Signature-expiration: 05.12.2025, 06:03:53 +, Signature-Inception: 05.11.2025, 06:03:53 +, KeyTag 41901, Signer-Name: it






• Status: Good - Algorithmus 10 and DNSKEY with KeyTag 41901 used to validate the DNSKEY RRSet






• Status: Valid Chain of trust. Parent-DS with Algorithm 10, KeyTag 41901, DigestType 2 and Digest "R/f3uiHkhZH2Fy7tE+NbZrk62fKID8m62mT2jOKOu5A=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone



Zone: siebenfoercher.it

siebenfoercher.it
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 "9r37u8sktc9g5phnbb6ggkvjp469d7pn" between the hashed NSEC3-owner "9r317v25g63uq4vd6elsfvbho1opfpfu" and the hashed NextOwner "9r3sl2sif95b9cfqbarsihseemi98t20". So the parent zone confirmes the not-existence of a DS RR.
Bitmap: NS, DS, RRSIG Validated: RRSIG-Owner 9r317v25g63uq4vd6elsfvbho1opfpfu.it., Algorithm: 10, 2 Labels, original TTL: 3600 sec, Signature-expiration: 05.12.2025, 06:03:53 +, Signature-Inception: 05.11.2025, 06:03:53 +, KeyTag 18395, Signer-Name: it






DS-Query in the parent zone sends valid NSEC3 RR with the Hash "rs1n3n7m54pdem5eunv9npkh3b6cgpjc" as Owner. That's the Hash of "it" with the NextHashedOwnerName "rs1pg43s35r5v1kf1v10ft5sp409iubv". So that domain name is the Closest Encloser of "siebenfoercher.it". Opt-Out: True.
Bitmap: NS, SOA, RRSIG, DNSKEY, NSEC3PARAM Validated: RRSIG-Owner rs1n3n7m54pdem5eunv9npkh3b6cgpjc.it., Algorithm: 10, 2 Labels, original TTL: 3600 sec, Signature-expiration: 05.12.2025, 06:03:53 +, Signature-Inception: 05.11.2025, 06:03:53 +, KeyTag 18395, Signer-Name: it






0 DNSKEY RR found









Zone: gtel2.siebenfoercher.it

gtel2.siebenfoercher.it
0 DS RR in the parent zone found






0 DNSKEY RR found







 

3. Name Servers

DomainNameserverNS-IP
www.vertreter1.siebenfoercher.it
•  ns1.sixpol.com

siebenfoercher.it
•  ns1.sixpol.com
159.69.187.23
Falkenstein/Saxony/Germany (DE) - Hetzner Online GmbH		•

•  ns2.sixpol.com
94.130.56.75
Nuremberg/Bavaria/Germany (DE) - Hetzner Online GmbH		•
it
•  a.dns.it
•

•  dns.nic.it
•

•  m.dns.it
•

•  nameserver.cnr.it
•

•  r.dns.it
•

•  v.dns.it / tld-all-ffm1@53044
•
gtel2.siebenfoercher.it
•  ns1.sixpol.com
159.69.187.23
Falkenstein/Saxony/Germany (DE) - Hetzner Online GmbH		•
siebenfoercher.it
•  ns1.sixpol.com
159.69.187.23
Falkenstein/Saxony/Germany (DE) - Hetzner Online GmbH		•

•  ns2.sixpol.com
94.130.56.75
Nuremberg/Bavaria/Germany (DE) - Hetzner Online GmbH		•
it
•  a.dns.it
•

•  dns.nic.it
•

•  m.dns.it
•

•  nameserver.cnr.it
•

•  r.dns.it
•

•  v.dns.it / tld-all-ffm1@53044
•

 

4. SOA-Entries


Domain:it
Zone-Name:it
Primary:dns.nic.it
Mail:hostmaster.nic.it
Serial:2025110508
Refresh:10800
Retry:900
Expire:604800
TTL:3600
num Entries:6


Domain:siebenfoercher.it
Zone-Name:siebenfoercher.it
Primary:ns1.sixpol.com
Mail:dns.sixpol.com
Serial:2025051201
Refresh:3600
Retry:3600
Expire:1209600
TTL:3600
num Entries:2


Domain:www.vertreter1.siebenfoercher.it
Zone-Name:
Primary:
Mail:
Serial:
Refresh:
Retry:
Expire:
TTL:
num Entries:1


Domain:it
Zone-Name:it
Primary:dns.nic.it
Mail:hostmaster.nic.it
Serial:2025110508
Refresh:10800
Retry:900
Expire:604800
TTL:3600
num Entries:6


Domain:siebenfoercher.it
Zone-Name:siebenfoercher.it
Primary:ns1.sixpol.com
Mail:dns.sixpol.com
Serial:2025051201
Refresh:3600
Retry:3600
Expire:1209600
TTL:3600
num Entries:2


Domain:gtel2.siebenfoercher.it
Zone-Name:siebenfoercher.it
Primary:ns1.sixpol.com
Mail:dns.sixpol.com
Serial:2025051201
Refresh:3600
Retry:3600
Expire:1209600
TTL:3600
num Entries:1


5. Screenshots

Startaddress: https://vertreter1.siebenfoercher.it/, address used: https://vertreter1.siebenfoercher.it/, Screenshot created 2025-11-05 08:11:17 +00:0

 

Mobil (412px x 732px)

 

1132 milliseconds

 

Screenshot mobile - https://vertreter1.siebenfoercher.it/
Mobil + Landscape (732px x 412px)

 

1159 milliseconds

 

Screenshot mobile landscape - https://vertreter1.siebenfoercher.it/
Screen (1280px x 1680px)

 

1323 milliseconds

 

Screenshot Desktop - https://vertreter1.siebenfoercher.it/

 

Mobile- and other Chrome-Checks


widthheight
visual Viewport412732
content Size412732

 

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

 

6. Url-Checks


:

:
DomainnameHttp-StatusredirectSec.G
• http://vertreter1.siebenfoercher.it/
45.135.68.147
301
https://vertreter1.siebenfoercher.it/
Html is minified: 102.73 %
0.670
A
Date: Wed, 05 Nov 2025 07:09:22 GMT
Server: Apache/2.4.65,(Debian)
Location: https://vertreter1.siebenfoercher.it/
Content-Length: 339
Content-Type: text/html; charset=iso-8859-1

• https://vertreter1.siebenfoercher.it/
45.135.68.147 gzip used - 605 / 1906 - 68.26 %
Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 0/0		200

Html is minified: 143.74 %
Other inline scripts (∑/total): 0/0		2.484
B
Date: Wed, 05 Nov 2025 07:09:23 GMT
Server: Apache/2.4.65,(Debian)
Upgrade: h2,h2c
Connection: Upgrade
ETag: "772-641405d648070-gzip"
Accept-Ranges: bytes
Vary: Accept-Encoding
Last-Modified: Thu, 16 Oct 2025 06:02:40 GMT
Content-Encoding: gzip
Content-Length: 605
Content-Type: text/html

• http://vertreter1.siebenfoercher.it/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
45.135.68.147
Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 0/0		301
https://vertreter1.siebenfoercher.it/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
Html is minified: 102.26 %
Other inline scripts (∑/total): 0/0		0.096
A
Visible Content:
Date: Wed, 05 Nov 2025 07:09:28 GMT
Server: Apache/2.4.65,(Debian)
Location: https://vertreter1.siebenfoercher.it/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
Content-Length: 408
Content-Type: text/html; charset=iso-8859-1

• https://vertreter1.siebenfoercher.it/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de

Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 0/0		404

Html is minified: 103.19 %
Other inline scripts (∑/total): 0/0		2.326
A
Not Found
Visible Content:
Date: Wed, 05 Nov 2025 07:09:34 GMT
Server: Apache/2.4.65,(Debian)
Content-Length: 291
Content-Type: text/html; charset=iso-8859-1

• https://45.135.68.147/
45.135.68.147 gzip used - 605 / 1906 - 68.26 %
Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 0/0		200

Html is minified: 143.74 %
Other inline scripts (∑/total): 0/0		2.424
N
Certificate error: RemoteCertificateNameMismatch
Date: Wed, 05 Nov 2025 07:09:29 GMT
Server: Apache/2.4.65,(Debian)
Upgrade: h2,h2c
Connection: Upgrade
ETag: "772-641405d648070-gzip"
Accept-Ranges: bytes
Vary: Accept-Encoding
Last-Modified: Thu, 16 Oct 2025 06:02:40 GMT
Content-Encoding: gzip
Content-Length: 605
Content-Type: text/html

 

7. Comments


1. General Results, most used to calculate the result

Aname "vertreter1.siebenfoercher.it" is subdomain, public suffix is ".it", top-level-domain is ".it", top-level-domain-type is "country-code", Country is Italy, tld-manager is "IIT - CNR", num .it-domains preloaded: 2389 (complete: 276475)
AGood: All ip addresses are public addresses
Warning: Only one ip address found: vertreter1.siebenfoercher.it 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: vertreter1.siebenfoercher.it has no ipv6 address.
AGood: No asked Authoritative Name Server had a timeout
ADNS: "Name Error" means: No www-dns-entry defined. This isn't a problem
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.
HSTS-Preload-Status: unknown. Domain never included in the Preload-list. Check https://hstspreload.org/ to learn some basics about the Google-Preload-List.
AGood: Some urls with http status 200/404 have a complete Content-Type header (MediaType / MediaSubType + correct charset):1 complete Content-Type - header (3 urls)
https://vertreter1.siebenfoercher.it/ 45.135.68.147


Url with incomplete Content-Type - header - missing charset
https://45.135.68.147/ 45.135.68.147


Url with incomplete Content-Type - header - missing charset
Ahttp://vertreter1.siebenfoercher.it/ 45.135.68.147
301
https://vertreter1.siebenfoercher.it/
Correct redirect http - https with the same domain name
Bhttps://vertreter1.siebenfoercher.it/ 45.135.68.147
200

Missing HSTS-Header
Bhttps://vertreter1.siebenfoercher.it/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
404

Missing HSTS-Header
Nhttps://45.135.68.147/ 45.135.68.147
200

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 vertreter1.siebenfoercher.it, 1 ip addresses, 1 different http results.
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.vertreter1.siebenfoercher.it

2. Header-Checks

Fvertreter1.siebenfoercher.it 45.135.68.147
Content-Security-Policy
Critical: Missing Header:
Fvertreter1.siebenfoercher.it 45.135.68.147
X-Content-Type-Options
Critical: Missing Header:
Fvertreter1.siebenfoercher.it 45.135.68.147
Referrer-Policy
Critical: Missing Header:
Fvertreter1.siebenfoercher.it 45.135.68.147
Permissions-Policy
Critical: Missing Header:
Bvertreter1.siebenfoercher.it 45.135.68.147
Cross-Origin-Embedder-Policy
Info: Missing Header
Bvertreter1.siebenfoercher.it 45.135.68.147
Cross-Origin-Opener-Policy
Info: Missing Header
Bvertreter1.siebenfoercher.it 45.135.68.147
Cross-Origin-Resource-Policy
Info: Missing Header

3. DNS- and NameServer - Checks

AInfo:: 2 Root-climbing DNS Queries required to find all IPv4- and IPv6-Addresses of 2 Name Servers.
AInfo:: 2 Queries complete, 2 with IPv6, 0 with IPv4.
AGood: All DNS Queries done via IPv6.
AGood: 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.ns1.sixpol.com (159.69.187.23), ns2.sixpol.com (94.130.56.75)
AGood (1 - 3.0):: An average of 1.0 queries per domain name server required to find all ip addresses of all name servers.
AInfo:: 2 different Name Servers found: ns1.sixpol.com, ns2.sixpol.com, 2 Name Servers included in Delegation: ns1.sixpol.com, ns2.sixpol.com, 2 Name Servers included in 1 Zone definitions: ns1.sixpol.com, ns2.sixpol.com, 1 Name Servers listed in SOA.Primary: ns1.sixpol.com.
AGood: Only one SOA.Primary Name Server found.: ns1.sixpol.com.
AGood: SOA.Primary Name Server included in the delegation set.: ns1.sixpol.com.
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.
AInfo: Ipv4-Subnet-list: 2 Name Servers, 2 different subnets (first Byte): 159., 94., 2 different subnets (first two Bytes): 159.69., 94.130., 2 different subnets (first three Bytes): 159.69.187., 94.130.56.
AExcellent: Every Name Server IPv4-address starts with an unique Byte.
AGood: Nameserver supports TCP connections: 4 good Nameserver
AGood: Nameserver supports Echo Capitalization: 4 good Nameserver
AGood: Nameserver supports EDNS with max. 512 Byte Udp payload, message is smaller: 4 good Nameserver
AGood: Nameserver has passed 10 EDNS-Checks (OP100, FLAGS, V1, V1OP100, V1FLAGS, DNSSEC, V1DNSSEC, NSID, COOKIE, CLIENTSUBNET): 4 good Nameserver
Nameserver doesn't pass all EDNS-Checks: ns1.sixpol.com: 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
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

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).
AGood: No https + http status 200 with inline CSS / JavaScript found
https://vertreter1.siebenfoercher.it/ 45.135.68.147
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://45.135.68.147/ 45.135.68.147
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.
AGood: 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.
AGood: All CSS / JavaScript files are sent compressed (gzip, deflate, br checked). That reduces the content of the files. 1 external CSS / JavaScript files found
Warning: CSS / JavaScript files with a missing or too short Cache-Control header found. Browsers should cache and re-use these files. 1 external CSS / JavaScript files without Cache-Control-Header, 0 with Cache-Control, but no max-age, 0 with Cache-Control max-age too short (minimum 7 days), 0 with Cache-Control long enough, 1 complete.
AGood: All checked attribute values are enclosed in quotation marks (" or ').
AInfo: No img element found, no alt attribute checked
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
https://vertreter1.siebenfoercher.it/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
404
2.326 seconds
Warning: 404 needs more then one second
ADuration: 168087 milliseconds, 168.087 seconds

 

8. Connections

DomainIPPortCert.ProtocolKeyExchangeStrengthCipherStrengthHashAlgorithmOCSP stapling
Domain/KeyExchangeIP/StrengthPort/CipherCert./StrengthProtocol/HashAlgorithmOCSP stapling
vertreter1.siebenfoercher.it
45.135.68.147
443
ok
Tls12
ECDH Ephermal
255
Aes256
256
Sha384
not supported
ok
vertreter1.siebenfoercher.it
45.135.68.147
443
ok
Tls12

ECDH Ephermal
255
Aes256
256
Sha384
not supported
ok
http/2 via ALPN supported 
No SNI required - domain included in main certificate 		Tls.1.2
no Tls.1.1
no Tls.1.0
no Ssl3
no Ssl2
http/2 via ALPN supported
No SNI required - domain included in main certificate 		Tls.1.2
no Tls.1.1
no Tls.1.0
no Ssl3
no Ssl2
Chain (complete)

1CN=vertreter1.siebenfoercher.it


2CN=E8, O=Let's Encrypt, C=US


vertreter1.siebenfoercher.it
vertreter1.siebenfoercher.it
443
ok
Tls12
ECDH Ephermal
255
Aes256
256
Sha384
not supported
ok

vertreter1.siebenfoercher.it
vertreter1.siebenfoercher.it
443
ok
Tls12

ECDH Ephermal
255
Aes256
256
Sha384
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=vertreter1.siebenfoercher.it


2CN=E8, O=Let's Encrypt, C=US


45.135.68.147
45.135.68.147
443
name does not match
Tls12
ECDH Ephermal
255
Aes256
256
Sha384
not supported
ok

45.135.68.147
45.135.68.147
443
name does not match
Tls12

ECDH Ephermal
255
Aes256
256
Sha384
not supported
ok
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 (complete)

1CN=vertreter1.siebenfoercher.it


2CN=E8, O=Let's Encrypt, C=US

 

9. Certificates

1.
1.
CN=vertreter1.siebenfoercher.it
05.11.2025
03.02.2026
expires in 89 days		vertreter1.siebenfoercher.it - 1 entry
1.
1.
CN=vertreter1.siebenfoercher.it
05.11.2025

03.02.2026
expires in 89 days


vertreter1.siebenfoercher.it - 1 entry

KeyalgorithmEC Public Key (256 bit, prime256v1)
Signatur:ECDSA SHA384
Serial Number:05843E76BCFC4527011BDD008D3E5DAC8651
Thumbprint:3FF22C5F51C8ED255B1AA6AE680B3B51A41EDD3D
SHA256 / Certificate:Ry05bDpnlT8SshEwddz+YoQmL84ciFsdeA8N1mU4Yzk=
SHA256 hex / Cert (DANE * 0 1):e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA256 hex / PublicKey (DANE * 1 1):544033d61df0d510b191621d96c7b5d9a668dc5712cd3ff80542b93bd5ad1567
SHA256 hex / Subject Public Key Information (SPKI):544033d61df0d510b191621d96c7b5d9a668dc5712cd3ff80542b93bd5ad1567 (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), Clientauthentifizierung (1.3.6.1.5.5.7.3.2)




2.
CN=E8, O=Let's Encrypt, C=US
13.03.2024
13.03.2027
expires in 492 days

2.
CN=E8, O=Let's Encrypt, C=US
13.03.2024

13.03.2027
expires in 492 days




KeyalgorithmEC Public Key (384 bit, secp384r1)
Signatur:SHA256 With RSA-Encryption
Serial Number:63959363C24E7082715918BFC3D7ED56
Thumbprint:54317EB0765F0BC674855184EB8374B4199E4655
SHA256 / Certificate:g2JP0zjI2bAjwYpny3qcBRnaQ9EXdbTGy9rUXD2ZfFI=
SHA256 hex / Cert (DANE * 0 1):e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA256 hex / PublicKey (DANE * 1 1):885bf0572252c6741dc9a52f5044487fef2a93b811cdedfad7624cc283b7cdd5
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 3497 days

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

04.06.2035
expires in 3497 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=E8, O=Let's Encrypt, C=US
1
1
1

CertSpotter-IdIssuernot beforenot afterDomain namesLE-Duplicatenext LE
12577576562
leaf cert		CN=E8, O=Let's Encrypt, C=US
2025-11-05 04:21:16
2026-02-03 04:21:15
vertreter1.siebenfoercher.it - 1 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=E8, O=Let's Encrypt, C=US
1
1
1

CRT-IdIssuernot beforenot afterDomain namesLE-Duplicatenext LE
22219340138
leaf cert		CN=E8, O=Let's Encrypt, C=US
2025-11-05 03:21:16
2026-02-03 03:21:15
vertreter1.siebenfoercher.it
1 entries


 

11. Html-Content - Entries

Summary


Subresource Integrity (SRI)
DomainnameHtmlElementrel/property∑∑ size∑ problems∑ int.∑ ext.∑ Origin poss.∑ SRI ParseErrors∑ SRI valid∑ SRI missing
https://vertreter1.siebenfoercher.it/
45.135.68.147		form

1

0
1
0
0
0
0


link
other
7
38,500 Bytes
0
6
0
0
0
0


meta
apple
2

0


0
0
0


meta
other
2

0


0
0
0


script

1
1,026,158 Bytes
0
1
0
0
0
0

https://45.135.68.147/
45.135.68.147		form

1

0


0
0
0


link
other
7

0


0
0
0


meta
apple
2

0


0
0
0


meta
other
2

0


0
0
0


script

1

0


0
0
0

 

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

DomainnameHtml-Elementname/equiv/ property/relhref/src/contentHttpStatusmsg∑Status
https://vertreter1.siebenfoercher.it/
45.135.68.147
form
post
index.php
200

1
ok
text/html; charset=UTF-8
missing X-Content-Type-Options nosniff




0 Bytes








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

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




No Cache-Control header
No Compression - 3880 Bytes






ETag: "f28-641405d62bb4f"



link
apple-touch-icon
touch-icon-ipad-pro.png
200

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




No Cache-Control header
No Compression - 8444 Bytes






ETag: "20fc-641405d662651"



link
apple-touch-icon
touch-icon-ipad-retina.png
200

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




No Cache-Control header
No Compression - 7813 Bytes






ETag: "1e85-641405d649fb0"



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

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




No Cache-Control header
No Compression - 6041 Bytes






ETag: "1799-641405d649010"



link
apple-touch-icon
touch-icon-iphone-retina.png
200

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




No Cache-Control header
No Compression - 9196 Bytes






ETag: "23ec-641405d649010"



link
manifest
manifest.json


1
ok















link
shortcut icon
favicon.ico
200

1
ok
image/vnd.microsoft.icon
missing X-Content-Type-Options nosniff




No Cache-Control header
No Compression - 3126 Bytes






ETag: "c36-641405d64bef0"



meta
charset
 utf-8


1
ok















meta
apple-mobile-web-app-capable
yes


1
ok















meta
apple-mobile-web-app-status-bar-style
black


1
ok















meta
viewport
width=device-width,user-scalable=no,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.0


1
ok















script
src
index.js
200

1
ok
defer attribute found text/javascript
missing X-Content-Type-Options nosniff




No Cache-Control - header
Compression (gzip): 1026158/6136036 Bytes






ETag: "5da0e4-641405d63a5af-gzip"

local SRI possible, possible hash-values:

 

sha256-9pEpqv6L+Q2ZYaazk0Tu0w+Xpj5zXNjOKhdFpTKaci4=
sha384-dVDwhMGsU/JsavcmPYUxQmLtv2i9xYpe+YudCcOrDvSlvpKemy5PtAAxXtBHnIOj
sha512-KtRNyIlEaqI+7RjwJEC69gkRST0IAvmA4ekb5BgrqoENSzoG2TJWVh6ZLfTctZD6hArCl0S4cz9XqkkuXA8oGw==

 

<script src="index.js" crossorigin="anonymous" integrity="sha256-9pEpqv6L+Q2ZYaazk0Tu0w+Xpj5zXNjOKhdFpTKaci4=" />


https://45.135.68.147/
45.135.68.147
form
post
index.php


1
ok















link
apple-touch-icon
touch-icon-ipad.png


1
ok















link
apple-touch-icon
touch-icon-ipad-pro.png


1
ok















link
apple-touch-icon
touch-icon-ipad-retina.png


1
ok















link
apple-touch-icon
touch-icon-iphone.png


1
ok















link
apple-touch-icon
touch-icon-iphone-retina.png


1
ok















link
manifest
manifest.json


1
ok















link
shortcut icon
favicon.ico


1
ok















meta
charset
 utf-8


1
ok















meta
apple-mobile-web-app-capable
yes


1
ok















meta
apple-mobile-web-app-status-bar-style
black


1
ok















meta
viewport
width=device-width,user-scalable=no,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.0


1
ok















script
src
index.js


1
ok
defer attribute found













 

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

Url used (first standard-https-result with http status 200): https://vertreter1.siebenfoercher.it/

Summary

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

TypeMessagenum found
1.errorElement head is missing a required instance of child element title.1
2.warningConsider avoiding viewport values that prevent users from resizing documents.1

Details


TypeMessage + Sample
1errorElement head is missing a required instance of child element title.

From line 27, column 43 to line 27, column 49

></script></head> <
2warningConsider avoiding viewport values that prevent users from resizing documents.

From line 6, column 9 to line 6, column 130

> <meta name="viewport" content="width=device-width,user-scalable=no,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.0">

 

13. Nameserver - IP-Adresses

Required Root-climbing DNS-Queries to find ip addresses of all Name Servers: ns1.sixpol.com, ns2.sixpol.com

 

QNr.DomainTypeNS used
1
com
NS
l.root-servers.net (2001:500:9f::42)

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.sixpol.com: 159.69.187.23
NS
a.gtld-servers.net (2001:503:a83e::2:30)

Answer: ns2.sixpol.com
94.130.56.75

 

14. CAA - Entries

DomainnameflagNameValue∑ Queries∑ Timeout
vertreter1.siebenfoercher.it



1
0
gtel2.siebenfoercher.it
0

no CAA entry found
1
0
siebenfoercher.it
0

no CAA entry found
1
0

0

no CAA entry found
1
0
it
0

no CAA entry found
1
0

0

no CAA entry found
1
0

 

15. TXT - Entries

DomainnameTXT EntryStatus∑ Queries∑ Timeout
siebenfoercher.it
apple-domain-verification=C4dIWSIbKVMfcbCy
ok
1
0
siebenfoercher.it
MS=ms31713374
ok
1
0
siebenfoercher.it
v=spf1 mx include:spf.protection.outlook.com ip4:92.243.137.109 -all
ok
1
0
vertreter1.siebenfoercher.it


1
0
_acme-challenge.gtel2.siebenfoercher.it

Name Error - The domain name does not exist
1
0
_acme-challenge.vertreter1.siebenfoercher.it

Name Error - The domain name does not exist
1
0
_acme-challenge.vertreter1.siebenfoercher.it.siebenfoercher.it

Name Error - The domain name does not exist
1
0
_acme-challenge.gtel2.siebenfoercher.it.gtel2.siebenfoercher.it

Name Error - The domain name does not exist
1
0
_acme-challenge.vertreter1.siebenfoercher.it.vertreter1.siebenfoercher.it

Name Error - The domain name does not exist
1
0

 

16. DomainService - Entries

TypeDomainPrefValueDNS-errornum AnswersStatusDescription
SPF
TXT
vertreter1.siebenfoercher.it

32768TXT expected, but CNAME found. CNAME not allowed, only TXT queries are allowed. See RFC 7208, 4.4.

				 
			

				 
			
17. Cipher Suites
Summary
DomainIPPortnum CipherstimeStd.ProtocolForward Secrecy
vertreter1.siebenfoercher.it
45.135.68.147
443
15 Ciphers69.91 sec
0 without, 15 FS
100.00 %
Complete

1
15 Ciphers
15.00 Ciphers/Check		69.91 sec69.91 sec/Check
0 without, 15 FS
100.00 %

Details
DomainIPPortCipher (OpenSsl / IANA)
vertreter1.siebenfoercher.it
45.135.68.147
443
ECDHE-ECDSA-CHACHA20-POLY1305
 (Recommended)
TLSv1.2
0xCC,0xA9
 FS
15 Ciphers, 

69.91 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




ECDHE-ECDSA-AES256-CCM8
 (Secure)
TLSv1.2
0xC0,0xAF
 FS

TLS_ECDHE_ECDSA_WITH_AES_256_CCM_8

ECDH
ECDSA
AESCCM8(256)
AEAD




ECDHE-ECDSA-AES256-CCM
 (Secure)
TLSv1.2
0xC0,0xAD
 FS

TLS_ECDHE_ECDSA_WITH_AES_256_CCM

ECDH
ECDSA
AESCCM(256)
AEAD




ECDHE-ECDSA-AES128-CCM8
 (Secure)
TLSv1.2
0xC0,0xAE
 FS

TLS_ECDHE_ECDSA_WITH_AES_128_CCM_8

ECDH
ECDSA
AESCCM8(128)
AEAD




ECDHE-ECDSA-AES128-CCM
 (Secure)
TLSv1.2
0xC0,0xAC
 FS

TLS_ECDHE_ECDSA_WITH_AES_128_CCM

ECDH
ECDSA
AESCCM(128)
AEAD




ECDHE-ECDSA-CAMELLIA256-SHA384
 (Weak)
TLSv1.2
0xC0,0x73
 FS

TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_CBC_SHA384

ECDH
ECDSA
Camellia(256)
SHA384




ECDHE-ECDSA-ARIA256-GCM-SHA384
 (Weak)
TLSv1.2
0xC0,0x5D
 FS

TLS_ECDHE_ECDSA_WITH_ARIA_256_GCM_SHA384

ECDH
ECDSA
ARIAGCM(256)
AEAD




ECDHE-ECDSA-AES256-SHA384
 (Weak)
TLSv1.2
0xC0,0x24
 FS

TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384

ECDH
ECDSA
AES(256)
SHA384




ECDHE-ECDSA-CAMELLIA128-SHA256
 (Weak)
TLSv1.2
0xC0,0x72
 FS

TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_CBC_SHA256

ECDH
ECDSA
Camellia(128)
SHA256




ECDHE-ECDSA-ARIA128-GCM-SHA256
 (Weak)
TLSv1.2
0xC0,0x5C
 FS

TLS_ECDHE_ECDSA_WITH_ARIA_128_GCM_SHA256

ECDH
ECDSA
ARIAGCM(128)
AEAD




ECDHE-ECDSA-AES128-SHA256
 (Weak)
TLSv1.2
0xC0,0x23
 FS

TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256

ECDH
ECDSA
AES(128)
SHA256




ECDHE-ECDSA-AES256-SHA
 (Weak)
TLSv1
0xC0,0x0A
 FS

TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA

ECDH
ECDSA
AES(256)
SHA1




ECDHE-ECDSA-AES128-SHA
 (Weak)
TLSv1
0xC0,0x09
 FS

TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA

ECDH
ECDSA
AES(128)
SHA1


				 
			
18. Portchecks



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



				 
			

				 
			

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