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



X

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

Checked:
24.11.2022 10:26:09


Older results

No older results found


1. IP-Addresses

HostTypeIP-Addressis auth.∑ Queries∑ Timeout
cert.cbu.uz
A
213.230.66.75
Tashkent/Uzbekistan (UZ) - Uzbektelecom JSC
Hostname: 75.66.uzpak.uz
yes
2
0

AAAA

yes


www.cert.cbu.uz

Name Error
yes
2
0
*.cbu.uz
A
Name Error
yes



AAAA
Name Error
yes



CNAME
Name Error
yes


*.cert.cbu.uz
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



2 DNSKEY RR found



Public Key with Algorithm 8, KeyTag 18733, Flags 256



Public Key with Algorithm 8, KeyTag 20326, Flags 257 (SEP = Secure Entry Point)



1 RRSIG RR to validate DNSKEY RR found



RRSIG-Owner (root), Algorithm: 8, 0 Labels, original TTL: 172800 sec, Signature-expiration: 11.12.2022, 00:00:00 +, Signature-Inception: 20.11.2022, 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: uz
uz
1 DS RR in the parent zone found



DS with Algorithm 8, KeyTag 3685, DigestType 2 and Digest 0FjVo1TvtjgFjavX4DEK8xvRaP/cz0lAV1C/TVzlrgs=



1 RRSIG RR to validate DS RR found



RRSIG-Owner uz., Algorithm: 8, 1 Labels, original TTL: 86400 sec, Signature-expiration: 07.12.2022, 05:00:00 +, Signature-Inception: 24.11.2022, 04:00:00 +, KeyTag 18733, Signer-Name: (root)



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 18733 used to validate the DS RRSet in the parent zone



2 DNSKEY RR found



Public Key with Algorithm 8, KeyTag 3685, Flags 257 (SEP = Secure Entry Point)



Public Key with Algorithm 8, KeyTag 65196, Flags 256



2 RRSIG RR to validate DNSKEY RR found



RRSIG-Owner uz., Algorithm: 8, 1 Labels, original TTL: 14400 sec, Signature-expiration: 16.12.2022, 15:36:52 +, Signature-Inception: 16.11.2022, 14:45:18 +, KeyTag 3685, Signer-Name: uz



RRSIG-Owner uz., Algorithm: 8, 1 Labels, original TTL: 14400 sec, Signature-expiration: 16.12.2022, 15:36:52 +, Signature-Inception: 16.11.2022, 14:45:18 +, KeyTag 65196, Signer-Name: uz



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 3685 used to validate the DNSKEY RRSet



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 65196 used to validate the DNSKEY RRSet



Status: Valid Chain of trust. Parent-DS with Algorithm 8, KeyTag 3685, DigestType 2 and Digest "0FjVo1TvtjgFjavX4DEK8xvRaP/cz0lAV1C/TVzlrgs=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone

Zone: cbu.uz
cbu.uz
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 "c5k2lb4palvcrhhbor0virtcf5tlc4hj" between the hashed NSEC3-owner "c5k2lb4palvcrhhbor0virtcf5tlc4hj" and the hashed NextOwner "c5ki3kph0pp8eemo90005n7s3v7jrr82". So the parent zone confirmes the not-existence of a DS RR.
Bitmap: No Bitmap? Validated: RRSIG-Owner c5k2lb4palvcrhhbor0virtcf5tlc4hj.uz., Algorithm: 8, 2 Labels, original TTL: 14400 sec, Signature-expiration: 18.12.2022, 16:33:13 +, Signature-Inception: 18.11.2022, 16:13:47 +, KeyTag 65196, Signer-Name: uz



0 DNSKEY RR found




Zone: cert.cbu.uz
cert.cbu.uz
0 DS RR in the parent zone found



0 DNSKEY RR found




Zone: www.cert.cbu.uz
www.cert.cbu.uz
0 DS RR in the parent zone found


3. Name Servers

DomainNameserverNS-IP
www.cert.cbu.uz
  g2.uzinfocom.uz

cert.cbu.uz
U  g2.uzinfocom.uz
91.212.89.51
Tashkent/Uzbekistan (UZ) - UZINFOCOM Single Integrator LLC

cbu.uz
  g2.uzinfocom.uz
91.212.89.51
Tashkent/Uzbekistan (UZ) - UZINFOCOM Single Integrator LLC


  rg2.uzinfocom.uz
91.212.89.58
Tashkent/Uzbekistan (UZ) - UZINFOCOM Single Integrator LLC

uz
  ns.uz


  ns1.uz


  ns2.uz


  ns3.uz


  ns4.uz


  ns5.uz


  ns6.uz


  ns7.uz


4. SOA-Entries


Domain:uz
Zone-Name:
Primary:
Mail:
Serial:
Refresh:
Retry:
Expire:
TTL:
num Entries:1


Domain:uz
Zone-Name:uz
Primary:ns.uz
Mail:hostmaster.cctld.uz
Serial:2022220032
Refresh:3600
Retry:900
Expire:5184000
TTL:14400
num Entries:7


Domain:cbu.uz
Zone-Name:cbu.uz
Primary:g2.uzinfocom.uz
Mail:m_ibragimov.cbu.uz
Serial:2022110101
Refresh:10800
Retry:3600
Expire:604800
TTL:10800
num Entries:2


Domain:cert.cbu.uz
Zone-Name:
Primary:
Mail:
Serial:
Refresh:
Retry:
Expire:
TTL:
num Entries:1


Domain:www.cert.cbu.uz
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://cert.cbu.uz/
213.230.66.75
-14

10.050
T
Timeout - The operation has timed out

• https://cert.cbu.uz/
213.230.66.75
-14

10.026
T
Timeout - The operation has timed out

• http://cert.cbu.uz/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
213.230.66.75
-14

10.037
T
Timeout - The operation has timed out
Visible Content:

• https://213.230.66.75/
213.230.66.75
-14

10.030
T
Timeout - The operation has timed out

7. Comments


1. General Results, most used to calculate the result

Aname "cert.cbu.uz" is subdomain, public suffix is ".uz", top-level-domain is ".uz", top-level-domain-type is "country-code", Country is Uzbekistan, tld-manager is "Single Integrator for Creation and Support of State Information Systems UZINFOCOM", num .uz-domains preloaded: 34 (complete: 210599)
AGood: All ip addresses are public addresses
Warning: Only one ip address found: cert.cbu.uz 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: cert.cbu.uz has no ipv6 address.
ADNS: "Name Error" means: No www-dns-entry defined. This isn't a problem
HSTS-Preload-Status: unknown. Domain never included in the Preload-list. Check https://hstspreload.org/ to learn some basics about the Google-Preload-List.
XFatal error: Nameserver doesn't support TCP connection: ns2.uz: Timeout
XFatal error: Nameserver isn't defined or has timeout
Info: Checking the ip addresses of that domain name not exact one certificate found. So it's impossible to check if that domain requires Server Name Indication (SNI).: Domain cert.cbu.uz, 1 ip addresses.
BNo _mta-sts TXT record found (mta-sts: Mail Transfer Agent Strict Transport Security - see RFC 8461). Read the result of server-daten.de (Url-Checks, Comments, Connections and DomainServiceRecords) to see a complete definition. Domainname: _mta-sts.cert.cbu.uz

2. Header-Checks (alpha, started 2022-10-23, may be buggy / incomplete)

U

No https result with http status 2** or 4** (standard-check) found, no header checked.

3. DNS- and NameServer - Checks

AInfo:: 7 Root-climbing DNS Queries required to find all IPv4- and IPv6-Addresses of 2 Name Servers.
AInfo:: 7 Queries complete, 1 with IPv6, 6 with IPv4.
Warning: Only some DNS Queries done via ipv6. IPv6 is the future, so the name servers of your name servers should have ipv6 addresses.
Ok (4 - 8):: An average of 3.5 queries per domain name server required to find all ip addresses of all name servers.
AInfo:: 2 different Name Servers found: g2.uzinfocom.uz, rg2.uzinfocom.uz, 2 Name Servers included in Delegation: g2.uzinfocom.uz, rg2.uzinfocom.uz, 2 Name Servers included in 1 Zone definitions: g2.uzinfocom.uz, rg2.uzinfocom.uz, 1 Name Servers listed in SOA.Primary: g2.uzinfocom.uz.
AGood: Only one SOA.Primary Name Server found.: g2.uzinfocom.uz.
AGood: SOA.Primary Name Server included in the delegation set.: g2.uzinfocom.uz.
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, 1 different subnets (first Byte): 91., 1 different subnets (first two Bytes): 91.212., 1 different subnets (first three Bytes): 91.212.89.
XFatal: All Name Server IPv4 addresses from the same subnet. Check https://www.iana.org/help/nameserver-requirements to learn some basics about name server configurations. If you manage these name servers, fix it. If it's your provider, change your provider.:
AGood: Nameserver supports TCP connections: 1 good Nameserver
XNameserver Timeout checking EDNS512: g2.uzinfocom.uz / 91.212.89.51
Nameserver doesn't pass all EDNS-Checks: g2.uzinfocom.uz: 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.
Nameserver doesn't pass all EDNS-Checks: g2.uzinfocom.uz / 91.212.89.51: OP100: fatal timeout. FLAGS: fatal timeout. V1: fatal timeout. V1OP100: fatal timeout. V1FLAGS: fatal timeout. DNSSEC: fatal timeout. V1DNSSEC: fatal timeout. NSID: fatal timeout. COOKIE: fatal timeout. CLIENTSUBNET: fatal timeout.
Nameserver doesn't pass all EDNS-Checks: ns.uz: 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

http://cert.cbu.uz/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 213.230.66.75
-14

Fatal: Check of /.well-known/acme-challenge/random-filename has a timeout. Creating a Letsencrypt certificate via http-01 challenge can't work. You need a running webserver (http) and an open port 80. If it's a home server + ipv4, perhaps a correct port forwarding port 80 extern ⇒ working port intern is required. Port 80 / http can redirect to another domain port 80 or port 443, but not other ports. If it's a home server, perhaps your ISP blocks port 80. Then you may use the dns-01 challenge. 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: 153980 milliseconds, 153.980 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)

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

No CRT - CT-Log entries found


11. Html-Content - Entries

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


12. Nameserver - IP-Adresses

Required Root-climbing DNS-Queries to find ip addresses of all Name Servers: g2.uzinfocom.uz, rg2.uzinfocom.uz

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

Answer: ns1.uz, ns2.uz, ns3.uz, ns4.uz, ns5.uz, ns6.uz, ns7.uz
2
g2.uzinfocom.uz
NS
ns1.uz (91.212.89.244)

Answer: ns1.dc.uz, rdns1.dc.uz

Answer: ns1.dc.uz
91.212.89.4

Answer: rdns1.dc.uz
91.212.89.2
3
rg2.uzinfocom.uz
NS
ns1.uz (91.212.89.244)

Answer: ns1.dc.uz, rdns1.dc.uz

Answer: ns1.dc.uz
91.212.89.4

Answer: rdns1.dc.uz
91.212.89.2
4
g2.uzinfocom.uz: 91.212.89.51
A
ns1.dc.uz (91.212.89.4)
5
g2.uzinfocom.uz: No AAAA record found
AAAA
ns1.dc.uz (91.212.89.4)
6
rg2.uzinfocom.uz: 91.212.89.58
A
ns1.dc.uz (91.212.89.4)
7
rg2.uzinfocom.uz: No AAAA record found
AAAA
ns1.dc.uz (91.212.89.4)


13. CAA - Entries

DomainnameflagNameValue∑ Queries∑ Timeout
cert.cbu.uz
0

no CAA entry found
2
0
cbu.uz
0

no CAA entry found
2
0
uz
0

no CAA entry found
1
0


14. TXT - Entries

DomainnameTXT EntryStatus∑ Queries∑ Timeout
cbu.uz
asap-site-verification-97b87e3c-cd89-4b71-99d1-d512d6d77f2f
ok
2
0
cbu.uz
k0x6srhfbrxzq75hjwb190tdzmyj1nh2
ok
2
0
cbu.uz
krq1mkk2qmzrpv483qpqvspdm6xqdb83
ok
2
0
cbu.uz
v=spf1 +a +mx -all
ok
2
0
cert.cbu.uz

ok
2
0
_acme-challenge.cert.cbu.uz

Name Error - The domain name does not exist
2
0
_acme-challenge.cert.cbu.uz.cbu.uz

Name Error - The domain name does not exist
2
0
_acme-challenge.cert.cbu.uz.cert.cbu.uz

Name Error - The domain name does not exist
2
0


15. DomainService - Entries (SSHFP Check is new - 2022-09-24, may be incomplete, alpha, some results are required)

No DomainServiceEntries entries found



16. Cipher Suites

No results


17. Portchecks

DomainIPPortDescriptionResultAnswer
cert.cbu.uz
213.230.66.75
21
FTP



cert.cbu.uz
213.230.66.75
21
FTP



cert.cbu.uz
213.230.66.75
22
SSH



cert.cbu.uz
213.230.66.75
22
SSH



cert.cbu.uz
213.230.66.75
25
SMTP



cert.cbu.uz
213.230.66.75
25
SMTP



cert.cbu.uz
213.230.66.75
53
DNS



cert.cbu.uz
213.230.66.75
53
DNS



cert.cbu.uz
213.230.66.75
110
POP3



cert.cbu.uz
213.230.66.75
110
POP3



cert.cbu.uz
213.230.66.75
143
IMAP



cert.cbu.uz
213.230.66.75
143
IMAP



cert.cbu.uz
213.230.66.75
465
SMTP (encrypted)



cert.cbu.uz
213.230.66.75
465
SMTP (encrypted)



cert.cbu.uz
213.230.66.75
587
SMTP (encrypted, submission)



cert.cbu.uz
213.230.66.75
587
SMTP (encrypted, submission)



cert.cbu.uz
213.230.66.75
993
IMAP (encrypted)



cert.cbu.uz
213.230.66.75
993
IMAP (encrypted)



cert.cbu.uz
213.230.66.75
995
POP3 (encrypted)



cert.cbu.uz
213.230.66.75
995
POP3 (encrypted)



cert.cbu.uz
213.230.66.75
1433
MS SQL



cert.cbu.uz
213.230.66.75
1433
MS SQL



cert.cbu.uz
213.230.66.75
2082
cPanel (http)



cert.cbu.uz
213.230.66.75
2082
cPanel (http)



cert.cbu.uz
213.230.66.75
2083
cPanel (https)



cert.cbu.uz
213.230.66.75
2083
cPanel (https)



cert.cbu.uz
213.230.66.75
2086
WHM (http)



cert.cbu.uz
213.230.66.75
2086
WHM (http)



cert.cbu.uz
213.230.66.75
2087
WHM (https)



cert.cbu.uz
213.230.66.75
2087
WHM (https)



cert.cbu.uz
213.230.66.75
2089
cPanel Licensing



cert.cbu.uz
213.230.66.75
2089
cPanel Licensing



cert.cbu.uz
213.230.66.75
2095
cPanel Webmail (http)



cert.cbu.uz
213.230.66.75
2095
cPanel Webmail (http)



cert.cbu.uz
213.230.66.75
2096
cPanel Webmail (https)



cert.cbu.uz
213.230.66.75
2096
cPanel Webmail (https)



cert.cbu.uz
213.230.66.75
2222
DirectAdmin (http)



cert.cbu.uz
213.230.66.75
2222
DirectAdmin (http)



cert.cbu.uz
213.230.66.75
2222
DirectAdmin (https)



cert.cbu.uz
213.230.66.75
2222
DirectAdmin (https)



cert.cbu.uz
213.230.66.75
3306
mySql



cert.cbu.uz
213.230.66.75
3306
mySql



cert.cbu.uz
213.230.66.75
5224
Plesk Licensing



cert.cbu.uz
213.230.66.75
5224
Plesk Licensing



cert.cbu.uz
213.230.66.75
5432
PostgreSQL



cert.cbu.uz
213.230.66.75
5432
PostgreSQL



cert.cbu.uz
213.230.66.75
8080
Ookla Speedtest (http)
open
http://213.230.66.75:8080/
Http-Status: -14
Timeout - The operation has timed out

cert.cbu.uz
213.230.66.75
8080
Ookla Speedtest (http)
open
http://213.230.66.75:8080/
Http-Status: -14
Timeout - The operation has timed out

cert.cbu.uz
213.230.66.75
8080
Ookla Speedtest (https)
open
https://213.230.66.75:8080/
Http-Status: -14
Timeout - The operation has timed out

cert.cbu.uz
213.230.66.75
8080
Ookla Speedtest (https)
open
https://213.230.66.75:8080/
Http-Status: -14
Timeout - The operation has timed out

cert.cbu.uz
213.230.66.75
8083
VestaCP http



cert.cbu.uz
213.230.66.75
8083
VestaCP http



cert.cbu.uz
213.230.66.75
8083
VestaCP https



cert.cbu.uz
213.230.66.75
8083
VestaCP https



cert.cbu.uz
213.230.66.75
8443
Plesk Administration (https)



cert.cbu.uz
213.230.66.75
8443
Plesk Administration (https)



cert.cbu.uz
213.230.66.75
8447
Plesk Installer + Updates



cert.cbu.uz
213.230.66.75
8447
Plesk Installer + Updates



cert.cbu.uz
213.230.66.75
8880
Plesk Administration (http)



cert.cbu.uz
213.230.66.75
8880
Plesk Administration (http)



cert.cbu.uz
213.230.66.75
10000
Webmin (http)



cert.cbu.uz
213.230.66.75
10000
Webmin (http)



cert.cbu.uz
213.230.66.75
10000
Webmin (https)



cert.cbu.uz
213.230.66.75
10000
Webmin (https)





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