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.




X

DNS-problem - authoritative Nameserver refused, not defined or timeout

Checked:
06.04.2020 16:35:56


Older results


1. IP-Addresses

HostTypeIP-Addressis auth.∑ Queries∑ Timeout
docs.bllwnkl.de
A
45.82.121.64
Gelnhausen/Hesse/Germany (DE) - First Colo
No Hostname found
yes
1
0

AAAA

yes


www.docs.bllwnkl.de

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: de
de
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, 05:00:00 +, Signature-Inception: 06.04.2020, 04:00:00 +, 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 21939, Flags 256



Public Key with Algorithm 8, KeyTag 45580, Flags 257 (SEP = Secure Entry Point)



1 RRSIG RR to validate DNSKEY RR found



Algorithm: 8, 1 Labels, original TTL: 300 sec, Signature-expiration: 16.04.2020, 14:22:21 +, Signature-Inception: 02.04.2020, 12:52:21 +, KeyTag 45580, Signer-Name: de



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 45580 used to validate the DNSKEY RRSet



Status: Valid Chain of trust. Parent-DS with Algorithm 8, KeyTag 45580, DigestType 2 and Digest "kYwy4vEiEXZr5iJmdPRHRY8iWbmg2HtE0p1Vr+ymsuE=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone

Zone: bllwnkl.de
bllwnkl.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 domain name between the hashed NSEC3-owner and the hashed NextOwner. So the parent zone confirmes the non-existence of a DS RR.Bitmap: A, RRSIG



0 DNSKEY RR found





Zone: docs.bllwnkl.de
docs.bllwnkl.de
0 DS RR in the parent zone found



0 DNSKEY RR found





Zone: www.docs.bllwnkl.de
www.docs.bllwnkl.de
0 DS RR in the parent zone found


3. Name Servers

DomainNameserverNS-IP
www.docs.bllwnkl.de
  ns1.bero-host.de

docs.bllwnkl.de
U  ns1.bero-host.de
45.95.54.2
Frankfurt am Main/Hesse/Germany (DE) - Jan Philipp Waldecker trading as LUMASERV Systems


 
2a0d:3584:1111::2
Koblenz/Rheinland-Pfalz/Germany (DE) - LUMASERV Anycast Network

bllwnkl.de
U  ns1.bero-host.de


  ns2.bero-host.de

de
  a.nic.de / ns-1.de.de8.bind


  f.nic.de / ns-1.de.de1


  l.de.net / ns-1.de.fr1


  n.de.net / s3.amx


  s.de.net / ns-3.de.de9


  z.nic.de / ns-2.de.de2.bind


4. SOA-Entries


Domain:de
Zone-Name:
Primary:f.nic.de
Mail:its.denic.de
Serial:1586183699
Refresh:7200
Retry:7200
Expire:3600000
TTL:7200
num Entries:6


Domain:bllwnkl.de
Zone-Name:
Primary:ns1.bero-host.de
Mail:hostmaster.bllwnkl.de
Serial:2019112513
Refresh:43200
Retry:7200
Expire:1209600
TTL:300
num Entries:2


Domain:docs.bllwnkl.de
Zone-Name:
Primary:ns1.bero-host.de
Mail:hostmaster.bllwnkl.de
Serial:2019112513
Refresh:43200
Retry:7200
Expire:1209600
TTL:300
num Entries:2


Domain:www.docs.bllwnkl.de
Zone-Name:
Primary:
Mail:
Serial:
Refresh:
Retry:
Expire:
TTL:
num Entries:1


5. Screenshots

No Screenshot listed, because no url-check with https + http status 200-299, 400-599 + not-ACME-check found.

6. Url-Checks


:

:
DomainnameHttp-StatusredirectSec.G
• http://docs.bllwnkl.de/
45.82.121.64
302
http://docs.bllwnkl.de/auth.aspx
Html is minified: 105.04 %
0.073
D
Server: nginx/1.17.8
Date: Mon, 06 Apr 2020 14:36:26 GMT
Content-Type: text/html
Content-Length: 125
Connection: close
Location: /auth.aspx
X-AspNet-Version: 4.0.30319
Cache-Control: private
Set-Cookie: ASP.NET_SessionId=9E5C7BDBDE37AC09C293E8D6; Path=/; Domain=docs.bllwnkl.de; HttpOnly
Access-Control-Allow-Origin: *

• http://docs.bllwnkl.de/auth.aspx

200

Html is minified: 130.20 %
0.164
H
Server: nginx/1.17.8
Date: Mon, 06 Apr 2020 14:36:27 GMT
Content-Type: text/html
Content-Length: 11183
Connection: close
X-AspNet-Version: 4.0.30319
Cache-Control: private
Set-Cookie: ASP.NET_SessionId=20D6B39E8BC6D5354ED4FF29; Path=/; Domain=docs.bllwnkl.de; HttpOnly
Access-Control-Allow-Origin: *

• https://docs.bllwnkl.de/
45.82.121.64
-2

1.066
V
ConnectFailure - Unable to connect to the remote server

• http://docs.bllwnkl.de/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
45.82.121.64
Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 0/0
404

Html is minified: 110.07 %
0.047
A
Not Found
Visible Content: 404 Not Found nginx/1.17.8
Server: nginx/1.17.8
Date: Mon, 06 Apr 2020 14:36:27 GMT
Content-Type: text/html
Content-Length: 153
Connection: close

7. Comments


1. General Results, most used to calculate the result

Aname "docs.bllwnkl.de" is subdomain, public suffix is "de", top-level-domain-type is "country-code", Country is Germany, tld-manager is "DENIC eG"
Agood: All ip addresses are public addresses
ADNS: "Name Error" means: No www-dns-entry defined. This isn't a problem
Agood - only one version with Http-Status 200
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 (2 urls)
http://docs.bllwnkl.de/auth.aspx


Url with incomplete Content-Type - header - missing charset
http://docs.bllwnkl.de/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 45.82.121.64


Url with incomplete Content-Type - header - missing charset
Dhttp://docs.bllwnkl.de/ 45.82.121.64
302
http://docs.bllwnkl.de/auth.aspx
Wrong redirect one domain http to other domain http. First redirect to https without changing the domain, so no new dns query is required. So the server can send the HSTS header. That's fundamental using HSTS (Http Strict Transport Security). First step: Add correct redirects http ⇒ https. 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. Then recheck your domain, should be Grade C. There is the rule to select one https version as preferred version.
Hfatal error: No https - result with http-status 200, no encryption
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.
Vhttps://docs.bllwnkl.de/ 45.82.121.64
-2

connect failure - perhaps firewall
XFatal error: Nameserver isn't defined or has timeout
XFatal error: Nameserver doesn't support TCP connection: ns1.bero-host.de: Fatal error - no NameServer IP-Address or connection. Details: One or more errors occurred. - Es konnte keine Verbindung hergestellt werden, da der Zielcomputer die Verbindung verweigerte 45.95.54.2:53
XFatal error: Nameserver doesn't support TCP connection: ns1.bero-host.de / 45.95.54.2: Fatal error - no NameServer IP-Address or connection. Details: One or more errors occurred. - Es konnte keine Verbindung hergestellt werden, da der Zielcomputer die Verbindung verweigerte 45.95.54.2:53

2. DNS- and NameServer - Checks

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: ns1.bero-host.de: 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.
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: 44937 milliseconds, 44.937 seconds


8. Connections

No connection informations found. Perhaps only http - connections.


9. Certificates

No certificate informations found. Perhaps only http - connections.


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
3

CertSpotter-IdIssuernot beforenot afterDomain namesLE-Duplicatenext LE
1276178344
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-11-30 07:57:40
2020-02-28 07:57:40
*.bllwnkl.de, bllwnkl.de - 2 entries


1230388100
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-11-07 20:24:53
2020-02-05 20:24:53
*.bllwnkl.de, bllwnkl.de - 2 entries


1114347189
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-09-08 20:43:20
2019-12-07 20:43:20
*.bllwnkl.de, bllwnkl.de - 2 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
0
2

CRT-IdIssuernot beforenot afterDomain namesLE-Duplicatenext LE
2189990979
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-11-30 06:57:40
2020-02-28 06:57:40
*.bllwnkl.de, bllwnkl.de
2 entries


2084437659
precert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-11-07 19:24:53
2020-02-05 19:24:53
*.bllwnkl.de, bllwnkl.de
2 entries



11. Html-Content - Entries

No Html-Content entries found. Only checked if https + status 200/401/403/404


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
docs.bllwnkl.de
0

no CAA entry found
1
0
bllwnkl.de
0

no CAA entry found
1
0
de
0

no CAA entry found
1
0


14. TXT - Entries

DomainnameTXT EntryStatus∑ Queries∑ Timeout
bllwnkl.de

ok
1
0
docs.bllwnkl.de

ok
1
0
_acme-challenge.docs.bllwnkl.de
0jgu7I9BJmrWw9D6ob8mq3hEb5NsIJM-qBc8oFronRg
looks good, correct length, correct characters
1
0
_acme-challenge.docs.bllwnkl.de.bllwnkl.de

perhaps wrong
1
0
_acme-challenge.docs.bllwnkl.de.docs.bllwnkl.de

Name Error - The domain name does not exist
1
0


15. Portchecks

Domain or IPPortDescriptionResultAnswer
docs.bllwnkl.de
21
FTP
open
220 (vsFTPd 3.0.3)

docs.bllwnkl.de
21
FTP
open
220 (vsFTPd 3.0.3)

docs.bllwnkl.de
22
SSH
open
SSH-2.0-OpenSSH_8.0p1 Ubuntu-6build1

docs.bllwnkl.de
22
SSH
open
SSH-2.0-OpenSSH_8.0p1 Ubuntu-6build1

docs.bllwnkl.de
25
SMTP



docs.bllwnkl.de
25
SMTP



docs.bllwnkl.de
53
DNS



docs.bllwnkl.de
53
DNS



docs.bllwnkl.de
110
POP3



docs.bllwnkl.de
110
POP3



docs.bllwnkl.de
143
IMAP



docs.bllwnkl.de
143
IMAP



docs.bllwnkl.de
465
SMTP (encrypted)



docs.bllwnkl.de
465
SMTP (encrypted)



docs.bllwnkl.de
587
SMTP (encrypted, submission)



docs.bllwnkl.de
587
SMTP (encrypted, submission)



docs.bllwnkl.de
993
IMAP (encrypted)



docs.bllwnkl.de
993
IMAP (encrypted)



docs.bllwnkl.de
995
POP3 (encrypted)



docs.bllwnkl.de
995
POP3 (encrypted)



docs.bllwnkl.de
1433
MS SQL



docs.bllwnkl.de
1433
MS SQL



docs.bllwnkl.de
2082
cPanel (http)



docs.bllwnkl.de
2082
cPanel (http)



docs.bllwnkl.de
2083
cPanel (https)



docs.bllwnkl.de
2083
cPanel (https)



docs.bllwnkl.de
2086
WHM (http)



docs.bllwnkl.de
2086
WHM (http)



docs.bllwnkl.de
2087
WHM (https)



docs.bllwnkl.de
2087
WHM (https)



docs.bllwnkl.de
2089
cPanel Licensing



docs.bllwnkl.de
2089
cPanel Licensing



docs.bllwnkl.de
2095
cPanel Webmail (http)



docs.bllwnkl.de
2095
cPanel Webmail (http)



docs.bllwnkl.de
2096
cPanel Webmail (https)



docs.bllwnkl.de
2096
cPanel Webmail (https)



docs.bllwnkl.de
2222
DirectAdmin (http)



docs.bllwnkl.de
2222
DirectAdmin (http)



docs.bllwnkl.de
2222
DirectAdmin (https)



docs.bllwnkl.de
2222
DirectAdmin (https)



docs.bllwnkl.de
3306
mySql



docs.bllwnkl.de
3306
mySql



docs.bllwnkl.de
5224
Plesk Licensing



docs.bllwnkl.de
5224
Plesk Licensing



docs.bllwnkl.de
5432
PostgreSQL



docs.bllwnkl.de
5432
PostgreSQL



docs.bllwnkl.de
8080
Ookla Speedtest (http)



docs.bllwnkl.de
8080
Ookla Speedtest (http)



docs.bllwnkl.de
8080
Ookla Speedtest (https)



docs.bllwnkl.de
8080
Ookla Speedtest (https)



docs.bllwnkl.de
8083
VestaCP http



docs.bllwnkl.de
8083
VestaCP http



docs.bllwnkl.de
8083
VestaCP https



docs.bllwnkl.de
8083
VestaCP https



docs.bllwnkl.de
8443
Plesk Administration (https)



docs.bllwnkl.de
8443
Plesk Administration (https)



docs.bllwnkl.de
8447
Plesk Installer + Updates



docs.bllwnkl.de
8447
Plesk Installer + Updates



docs.bllwnkl.de
8880
Plesk Administration (http)



docs.bllwnkl.de
8880
Plesk Administration (http)



docs.bllwnkl.de
10000
Webmin (http)



docs.bllwnkl.de
10000
Webmin (http)



docs.bllwnkl.de
10000
Webmin (https)



docs.bllwnkl.de
10000
Webmin (https)



45.82.121.64
21
FTP
open
220 (vsFTPd 3.0.3)

45.82.121.64
21
FTP
open
220 (vsFTPd 3.0.3)

45.82.121.64
22
SSH
open
SSH-2.0-OpenSSH_8.0p1 Ubuntu-6build1

45.82.121.64
22
SSH
open
SSH-2.0-OpenSSH_8.0p1 Ubuntu-6build1

45.82.121.64
25
SMTP



45.82.121.64
25
SMTP



45.82.121.64
53
DNS



45.82.121.64
53
DNS



45.82.121.64
110
POP3



45.82.121.64
110
POP3



45.82.121.64
143
IMAP



45.82.121.64
143
IMAP



45.82.121.64
465
SMTP (encrypted)



45.82.121.64
465
SMTP (encrypted)



45.82.121.64
587
SMTP (encrypted, submission)



45.82.121.64
587
SMTP (encrypted, submission)



45.82.121.64
993
IMAP (encrypted)



45.82.121.64
993
IMAP (encrypted)



45.82.121.64
995
POP3 (encrypted)



45.82.121.64
995
POP3 (encrypted)



45.82.121.64
1433
MS SQL



45.82.121.64
1433
MS SQL



45.82.121.64
2082
cPanel (http)



45.82.121.64
2082
cPanel (http)



45.82.121.64
2083
cPanel (https)



45.82.121.64
2083
cPanel (https)



45.82.121.64
2086
WHM (http)



45.82.121.64
2086
WHM (http)



45.82.121.64
2087
WHM (https)



45.82.121.64
2087
WHM (https)



45.82.121.64
2089
cPanel Licensing



45.82.121.64
2089
cPanel Licensing



45.82.121.64
2095
cPanel Webmail (http)



45.82.121.64
2095
cPanel Webmail (http)



45.82.121.64
2096
cPanel Webmail (https)



45.82.121.64
2096
cPanel Webmail (https)



45.82.121.64
2222
DirectAdmin (http)



45.82.121.64
2222
DirectAdmin (http)



45.82.121.64
2222
DirectAdmin (https)



45.82.121.64
2222
DirectAdmin (https)



45.82.121.64
3306
mySql



45.82.121.64
3306
mySql



45.82.121.64
5224
Plesk Licensing



45.82.121.64
5224
Plesk Licensing



45.82.121.64
5432
PostgreSQL



45.82.121.64
5432
PostgreSQL



45.82.121.64
8080
Ookla Speedtest (http)



45.82.121.64
8080
Ookla Speedtest (http)



45.82.121.64
8080
Ookla Speedtest (https)



45.82.121.64
8080
Ookla Speedtest (https)



45.82.121.64
8083
VestaCP http



45.82.121.64
8083
VestaCP http



45.82.121.64
8083
VestaCP https



45.82.121.64
8083
VestaCP https



45.82.121.64
8443
Plesk Administration (https)



45.82.121.64
8443
Plesk Administration (https)



45.82.121.64
8447
Plesk Installer + Updates



45.82.121.64
8447
Plesk Installer + Updates



45.82.121.64
8880
Plesk Administration (http)



45.82.121.64
8880
Plesk Administration (http)



45.82.121.64
10000
Webmin (http)



45.82.121.64
10000
Webmin (http)



45.82.121.64
10000
Webmin (https)



45.82.121.64
10000
Webmin (https)





Permalink: https://check-your-website.server-daten.de/?i=d78bdf3a-9be9-4945-aa58-fa79f7f2c75e


Last Result: https://check-your-website.server-daten.de/?q=docs.bllwnkl.de - 2020-04-06 16:35:56


Do you like this page? Support this tool, add a link on your page:

<a href="https://check-your-website.server-daten.de/?q=docs.bllwnkl.de" target="_blank">Check this Site: docs.bllwnkl.de</a>