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


Info: Problems with 3.048.289 Letsencrypt certificates (378.325 accounts). They must be revoked (revocation starts 2020-03-04 20:00 UTC) - see Revoking certain certificates on March 4. Update 2020-03-07: Good news: Mass-revocation is canceled.

This tool: A check (SerialNumber) is added. Letsencrypt has published a list of critical SerialNumbers, this list is checked. See the part "9. Certificates". If there is a warning, renew that certificate and replace the current certificate.




O

old / weak connection

Checked:
07.04.2020 00:11:54


Older results

No older results found


1. IP-Addresses

HostTypeIP-Addressis auth.∑ Queries∑ Timeout
aaat.ddns.net
A
182.171.230.44
Minato/Nagano/Japan (JP) - Sony Network Communications Inc.
No Hostname found
yes
1
0

AAAA

yes


www.aaat.ddns.net

Name Error
yes
1
0


2. DNSSEC

Info: The Xml-split has triggered some hidden bugs. Now it looks ok.
If root or the top level zone isn't validated, it's buggy.
Both green and your domain is red -> it's your domain.

Zone (*)DNSSEC - Informations

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



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 33853, Flags 256



Public Key with Algorithm 8, KeyTag 48903, Flags 256



1 RRSIG RR to validate DNSKEY RR found



Algorithm: 8, 0 Labels, original TTL: 172800 sec, Signature-expiration: 22.04.2020, 00:00:00 +, Signature-Inception: 01.04.2020, 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: net
net
1 DS RR in the parent zone found



1 RRSIG RR to validate DS RR found



Algorithm: 8, 1 Labels, original TTL: 86400 sec, Signature-expiration: 19.04.2020, 17:00:00 +, Signature-Inception: 06.04.2020, 16:00:00 +, KeyTag 48903, Signer-Name: (root)



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 48903 used to validate the DS RRSet in the parent zone



2 DNSKEY RR found



Public Key with Algorithm 8, KeyTag 24512, Flags 256



Public Key with Algorithm 8, KeyTag 35886, Flags 257 (SEP = Secure Entry Point)



1 RRSIG RR to validate DNSKEY RR found



Algorithm: 8, 1 Labels, original TTL: 86400 sec, Signature-expiration: 19.04.2020, 16:28:30 +, Signature-Inception: 04.04.2020, 16:23:30 +, KeyTag 35886, Signer-Name: net



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 35886 used to validate the DNSKEY RRSet



Status: Valid Chain of trust. Parent-DS with Algorithm 8, KeyTag 35886, DigestType 2 and Digest "eGKyf19Rbr4ZaARE1M5edimBkxhCxGXwAjZAHYvZc+4=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone

Zone: ddns.net
ddns.net
0 DS RR in the parent zone found



DS-Query in the parent zone has a valid NSEC3 RR as result with the hashed domain name between the hashed NSEC3-owner and the hashed NextOwner. So the parent zone confirmes the non-existence of a DS RR.Bitmap: NS, DS, RRSIG



0 DNSKEY RR found





Zone: aaat.ddns.net
aaat.ddns.net
0 DS RR in the parent zone found



0 DNSKEY RR found





Zone: www.aaat.ddns.net
www.aaat.ddns.net
0 DS RR in the parent zone found


3. Name Servers

DomainNameserverNS-IP
www.aaat.ddns.net
  nf1.no-ip.com

aaat.ddns.net
  nf1.no-ip.com / f2.fra.hv.as29997.net
194.62.182.53
City of London/England/United Kingdom (GB) - ARTEC


 
2a07:dc00:1820::53
Amsterdam/North Holland/Netherlands (NL) - Vitalwerks Internet Solutions, LLC

ddns.net
  nf1.no-ip.com / f2.fra.hv.as29997.net


  nf2.no-ip.com / f1.ams.hv.as29997.net


  nf3.no-ip.com / f1.fra.vr.as29997.net


  nf4.no-ip.com / localhost

net
  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


4. SOA-Entries


Domain:net
Zone-Name:
Primary:a.gtld-servers.net
Mail:nstld.verisign-grs.com
Serial:1586211094
Refresh:1800
Retry:900
Expire:604800
TTL:86400
num Entries:11


Domain:net
Zone-Name:
Primary:a.gtld-servers.net
Mail:nstld.verisign-grs.com
Serial:1586211109
Refresh:1800
Retry:900
Expire:604800
TTL:86400
num Entries:2


Domain:ddns.net
Zone-Name:
Primary:nf1.no-ip.com
Mail:hostmaster.no-ip.com
Serial:2303937326
Refresh:10800
Retry:1800
Expire:604800
TTL:1800
num Entries:4


Domain:aaat.ddns.net
Zone-Name:
Primary:nf1.no-ip.com
Mail:hostmaster.no-ip.com
Serial:2303937326
Refresh:10800
Retry:1800
Expire:604800
TTL:1800
num Entries:2


Domain:www.aaat.ddns.net
Zone-Name:
Primary:
Mail:
Serial:
Refresh:
Retry:
Expire:
TTL:
num Entries:1


5. Screenshots

Startaddress: https://aaat.ddns.net, address used: https://aaat.ddns.net/, Screenshot created 2020-04-07 00:12:56 +00:0

Mobil (412px x 732px)

323 milliseconds

Screenshot mobile - https://aaat.ddns.net/
Mobil + Landscape (732px x 412px)

308 milliseconds

Screenshot mobile landscape - https://aaat.ddns.net/
Screen (1280px x 1680px)

1426 milliseconds

Screenshot Desktop - https://aaat.ddns.net/

Mobile- and other Chrome-Checks

widthheight
visual Viewport412716
content Size560716

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

Chrome-Connection: info. obsolete connection settings. The connection to this site is encrypted and authenticated using TLS 1.0, ECDHE_RSA with X25519, and AES_256_CBC with HMAC-SHA1.

Chrome-Resources : secure. all served securely. All resources on this page are served securely.

6. Url-Checks


:

:
DomainnameHttp-StatusredirectSec.G
• http://aaat.ddns.net/
182.171.230.44 No GZip used - 499 / 612 - 81.54 % possible
200

Html is minified: 129.94 %
0.573
H
small visible content (num chars: 273)
Welcome to nginx! If you see this page, the nginx web server is successfully installed and working. Further configuration is required. For online documentation and support please refer to nginx.org . Commercial support is available at nginx.com . Thank you for using nginx.
Server: nginx
Date: Mon, 06 Apr 2020 22:12:25 GMT
Content-Type: text/html
Content-Length: 612
Last-Modified: Tue, 17 Apr 2018 15:22:36 GMT
Connection: close
ETag: "5ad6113c-264"
Accept-Ranges: bytes

• https://aaat.ddns.net/
182.171.230.44 No GZip used - 499 / 612 - 81.54 % possible
Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 1/120
200

Html is minified: 129.94 %
6.627
B
small visible content (num chars: 273)
Welcome to nginx! If you see this page, the nginx web server is successfully installed and working. Further configuration is required. For online documentation and support please refer to nginx.org . Commercial support is available at nginx.com . Thank you for using nginx.
Server: nginx
Date: Mon, 06 Apr 2020 22:12:26 GMT
Content-Type: text/html
Content-Length: 612
Last-Modified: Tue, 17 Apr 2018 15:22:36 GMT
Connection: close
ETag: "5ad6113c-264"
Accept-Ranges: bytes

• http://aaat.ddns.net/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
182.171.230.44
Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 0/0
404

Html is minified: 109.46 %
0.563
A
Not Found
Visible Content: 404 Not Found nginx
Server: nginx
Date: Mon, 06 Apr 2020 22:12:33 GMT
Content-Type: text/html
Content-Length: 162
Connection: close

7. Comments


1. General Results, most used to calculate the result

Aname "aaat.ddns.net" is domain, public suffix is "ddns.net", top-level-domain-type is "generic", tld-manager is "VeriSign Global Registry Services"
Agood: All ip addresses are public addresses
Agood: No asked Authoritative Name Server had a timeout
ADNS: "Name Error" means: No www-dns-entry defined. This isn't a problem
Agood: one preferred version: non-www is preferred
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):0 complete Content-Type - header (3 urls)
http://aaat.ddns.net/ 182.171.230.44


Url with incomplete Content-Type - header - missing charset
https://aaat.ddns.net/ 182.171.230.44


Url with incomplete Content-Type - header - missing charset
http://aaat.ddns.net/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 182.171.230.44


Url with incomplete Content-Type - header - missing charset
Bhttps://aaat.ddns.net/ 182.171.230.44
200

Missing HSTS-Header
CError - more then one version with Http-Status 200. After all redirects, all users (and search engines) should see the same https url: Non-www or www, but not both with http status 200.
HFatal error: http result with http-status 200, no encryption. Add a redirect http ⇒ https, so every connection is secure. Perhaps in your port 80 vHost something like "RewriteEngine on" + "RewriteRule ^ https://%{SERVER_NAME}%{REQUEST_URI} [END,QSA,R=permanent]" (two rows, without the "). Don't add this in your port 443 vHost, that would create a loop.
OOld connection: Tls.1.0 is deprecated, Tls.1.2 should be supported
OOld connection: SHA1 as Hash Algorithm is deprecated. Switch to SHA256 or SHA384. If your certificate has SHA256, first check your domain via ssllabs.com and update weak Cipher Suites. Forward Secrecy support is required. The part "Cipher Suites" should have a preference. First Cipher Suite with SHA instead of SHA256 or higher - that's the problem, change that. If that doesn't help, check if there is an old Firewall / router or something else, that supports only SHA1. Update that component.

2. DNS- and NameServer - Checks

AGood: Nameserver supports TCP connections: 2 good Nameserver
AGood: Nameserver supports Echo Capitalization: 2 good Nameserver
AGood: Nameserver supports EDNS with max. 512 Byte Udp payload, message is smaller: 2 good Nameserver
AGood: Nameserver has passed 10 EDNS-Checks (OP100, FLAGS, V1, V1OP100, V1FLAGS, DNSSEC, V1DNSSEC, NSID, COOKIE, CLIENTSUBNET): 2 good Nameserver
Nameserver doesn't pass all EDNS-Checks: nf1.no-ip.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.

3. 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.
https://aaat.ddns.net/ 182.171.230.44
200

Warning: https result with status 200 and size greater then 1024 Bytes without GZip found. Add GZip support so the html content is compressed.
https://aaat.ddns.net/ 182.171.230.44
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://aaat.ddns.net/ 182.171.230.44
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://aaat.ddns.net/ 182.171.230.44
200

Warning: Https connections (Standard Port 443) found without support of the http/2 protocol via ALPN. Http/2 is the new Http-Version (old: http 1.1) with some important new features. Update your server software so http/2 is available. Only one TCP-connection per Server (that's a performance boost), Header-Compression and Server Pushs are available. Domain Sharding and Inline-CSS/Javascript shouldn't used with http/2.
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
ADuration: 66840 milliseconds, 66.840 seconds


8. Connections

DomainIPPortCert.ProtocolKeyExchangeStrengthCipherStrengthHashAlgorithmOCSP stapling
Domain/KeyExchangeIP/StrengthPort/CipherCert./StrengthProtocol/HashAlgorithmOCSP stapling
aaat.ddns.net
182.171.230.44
443
ok
Tls
ECDH Ephermal
255
Aes256
256
Sha1
error checking OCSP stapling
weak
aaat.ddns.net
182.171.230.44
443
ok
Tls

ECDH Ephermal
255
Aes256
256
Sha1
error checking OCSP stapling
weak
no http/2 via ALPN 
no Tls.1.2
no Tls.1.1
Tls.1.0
no http/2 via ALPN
no Tls.1.2
no Tls.1.1
Tls.1.0
Chain (complete)
1CN=aaat.ddns.net

2CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US


9. Certificates

1.
1.
CN=aaat.ddns.net
06.04.2020
05.07.2020
expires in 34 days
aaat.ddns.net - 1 entry
1.
1.
CN=aaat.ddns.net
06.04.2020

05.07.2020
expires in 34 days
aaat.ddns.net - 1 entry

KeyalgorithmRSA encryption (2048 bit)
Signatur:SHA256 With RSA-Encryption
Serial Number:03126B61635459ADEFD5876DB7DE1D39E8CE
Thumbprint:4DD5BB2C70ABEEEC974D700F201C0CB450815714
SHA256 / Certificate:+HXmWsDAqpl7P5p7hT/UBtzVPo+w/aPbPIAJLHoLKcc=
SHA256 hex / Cert (DANE * 0 1):e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA256 hex / PublicKey (DANE * 1 1):ee7581a43bca53058879fc207b86cc5ade875d0bfe12d0ff618eb6caa69071a1
SHA256 hex / Subject Public Key Information (SPKI):4870ec9d38614c71487cff41427d2b6e28b2b69e9cf8a7fcb736cf7899e0a978
SPKI checked via https://v1.pwnedkeys.com/spki-hash:Good: Key isn't compromised
OCSP - Url:http://ocsp.int-x3.letsencrypt.org
OCSP - must staple:no
Certificate Transparency:yes


2.
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
17.03.2016
17.03.2021
expires in 289 days


2.
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
17.03.2016

17.03.2021
expires in 289 days


KeyalgorithmRSA encryption (2048 bit)
Signatur:SHA256 With RSA-Encryption
Serial Number:0A0141420000015385736A0B85ECA708
Thumbprint:E6A3B45B062D509B3382282D196EFE97D5956CCB
SHA256 / Certificate:JYR9Zo608E/dQLErawdAxWfafQJDCOtsLJb+QdneIY0=
SHA256 hex / Cert (DANE * 0 1):25847d668eb4f04fdd40b12b6b0740c567da7d024308eb6c2c96fe41d9de218d
SHA256 hex / PublicKey (DANE * 1 1):60b87575447dcba2a36b7d11ac09fb24a9db406fee12d2cc90180517616e8a18
SHA256 hex / Subject Public Key Information (SPKI):cbb93d32de628874a3ecfb92affadc97f1b795f84cc6f24221a089dee1aa25ad
SPKI checked via https://v1.pwnedkeys.com/spki-hash:Good: Key isn't compromised
OCSP - Url:http://isrg.trustid.ocsp.identrust.com
OCSP - must staple:no
Certificate Transparency:no


3.
CN=DST Root CA X3, O=Digital Signature Trust Co.
30.09.2000
30.09.2021
expires in 486 days


3.
CN=DST Root CA X3, O=Digital Signature Trust Co.
30.09.2000

30.09.2021
expires in 486 days


KeyalgorithmRSA encryption (2048 bit)
Signatur:SHA-1 with RSA Encryption
Serial Number:44AFB080D6A327BA893039862EF8406B
Thumbprint:DAC9024F54D8F6DF94935FB1732638CA6AD77C13
SHA256 / Certificate:BocmAzGnJAPZCfEF5pvPDTLhvSST/8bZIG0RvNZ3Bzk=
SHA256 hex / Cert (DANE * 0 1):0687260331a72403d909f105e69bcf0d32e1bd2493ffc6d9206d11bcd6770739
SHA256 hex / PublicKey (DANE * 1 1):563b3caf8cfef34c2335caf560a7a95906e8488462eb75ac59784830df9e5b2b
SHA256 hex / Subject Public Key Information (SPKI):29cc40db5e2de462a311cbbafaa1dc466960002335ecdf3317f2cd05c1d0bedf
SPKI checked via https://v1.pwnedkeys.com/spki-hash:Good: Key isn't compromised
OCSP - Url:
OCSP - must staple:no
Certificate Transparency:no



10. Last Certificates - Certificate Transparency Log Check

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

Issuerlast 7 daysactivenum Certs
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
0
0
1

CertSpotter-IdIssuernot beforenot afterDomain namesLE-Duplicatenext LE
1437932478
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-02-17 20:06:14
2020-05-17 20:06:14
aaat.ddns.net - 1 entries



2. Source crt.sh - old and new certificates, sometimes very slow - only certificates with "not after" > 2019 are listed

Issuerlast 7 daysactivenum Certs
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
0 /0 new
1
4

CRT-IdIssuernot beforenot afterDomain namesLE-Duplicatenext LE
2674900647
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-04-06 19:01:35
2020-07-05 19:01:35
aaat.ddns.net
1 entries


2486091962
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-02-17 19:06:14
2020-05-17 18:06:14
aaat.ddns.net
1 entries


2289028154
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-12-24 19:23:55
2020-03-23 19:23:55
aaat.ddns.net
1 entries


2002875469
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-10-15 18:35:48
2020-01-13 19:35:48
aaat.ddns.net
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://aaat.ddns.net/
182.171.230.44
a

2

0


0
0
0

Details

DomainnameHtml-Elementname/equiv/ property/relhref/src/contentHttpStatusmsgStatus
https://aaat.ddns.net/
182.171.230.44
a

http://nginx.com/


1
ok








a

http://nginx.org/


1
ok








12. Nameserver - IP-Adresses (alpha)

Required Root-climbing DNS-Queries to find ip addresses of all Name Servers:

No NameServer - IP address informations found. The feature is new (2020-05-07), so recheck this domain.


13. CAA - Entries

DomainnameflagNameValue∑ Queries∑ Timeout
aaat.ddns.net
0

no CAA entry found
1
0
ddns.net
0

no CAA entry found
1
0
net
0

no CAA entry found
1
0


14. TXT - Entries

DomainnameTXT EntryStatus∑ Queries∑ Timeout
aaat.ddns.net

ok
1
0
_acme-challenge.aaat.ddns.net

Name Error - The domain name does not exist
1
0
_acme-challenge.aaat.ddns.net.aaat.ddns.net

Name Error - The domain name does not exist
1
0


15. Portchecks

No Port checks



Permalink: https://check-your-website.server-daten.de/?i=bd313ee8-aaf7-41b1-b5fa-a294cac7778d


Last Result: https://check-your-website.server-daten.de/?q=aaat.ddns.net - 2020-04-07 00:11:54


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