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



X

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

Checked:
24.11.2022 14:17:49


Older results

No older results found


1. IP-Addresses

HostTypeIP-Addressis auth.∑ Queries∑ Timeout
it-sys.fin.africa.com

Name Error
yes
1
0
www.it-sys.fin.africa.com

Name Error
yes
1
0
*.fin.africa.com
A
Name Error
yes



AAAA
Name Error
yes



CNAME
Name Error
yes


*.it-sys.fin.africa.com
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: com
com
1 DS RR in the parent zone found



DS with Algorithm 8, KeyTag 30909, DigestType 2 and Digest 4tPJFvbe6scylOgmj7WIUESoM/xUWViPSpGEz8QaV2Y=



1 RRSIG RR to validate DS RR found



RRSIG-Owner com., 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 30909, Flags 257 (SEP = Secure Entry Point)



Public Key with Algorithm 8, KeyTag 53929, Flags 256



1 RRSIG RR to validate DNSKEY RR found



RRSIG-Owner com., Algorithm: 8, 1 Labels, original TTL: 86400 sec, Signature-expiration: 06.12.2022, 18:24:21 +, Signature-Inception: 21.11.2022, 18:19:21 +, KeyTag 30909, Signer-Name: com



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 30909 used to validate the DNSKEY RRSet



Status: Valid Chain of trust. Parent-DS with Algorithm 8, KeyTag 30909, DigestType 2 and Digest "4tPJFvbe6scylOgmj7WIUESoM/xUWViPSpGEz8QaV2Y=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone

Zone: africa.com
africa.com
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 "9i9o2lblnd0uj4fn6vvjtb4obfcatku9" between the hashed NSEC3-owner "9i9nl570e69r96pb24hcugcvg1n6udmv" and the hashed NextOwner "9i9o7lqimm1k5hm0tj0eho9sfmff45oj". So the parent zone confirmes the not-existence of a DS RR.
Bitmap: NS, DS, RRSIG Validated: RRSIG-Owner 9i9nl570e69r96pb24hcugcvg1n6udmv.com., Algorithm: 8, 2 Labels, original TTL: 86400 sec, Signature-expiration: 01.12.2022, 06:11:05 +, Signature-Inception: 24.11.2022, 05:01:05 +, KeyTag 53929, Signer-Name: com



DS-Query in the parent zone sends valid NSEC3 RR with the Hash "ck0pojmg874ljref7efn8430qvit8bsm" as Owner. That's the Hash of "com" with the NextHashedOwnerName "ck0q2d6ni4i7eqh8na30ns61o48ul8g5". So that domain name is the Closest Encloser of "africa.com". Opt-Out: True.
Bitmap: NS, SOA, RRSIG, DNSKEY, NSEC3PARAM Validated: RRSIG-Owner ck0pojmg874ljref7efn8430qvit8bsm.com., Algorithm: 8, 2 Labels, original TTL: 86400 sec, Signature-expiration: 01.12.2022, 05:24:31 +, Signature-Inception: 24.11.2022, 04:14:31 +, KeyTag 53929, Signer-Name: com



0 DNSKEY RR found




Zone: fin.africa.com
fin.africa.com
0 DS RR in the parent zone found

Zone: it-sys.fin.africa.com
it-sys.fin.africa.com
0 DS RR in the parent zone found

Zone: www.it-sys.fin.africa.com
www.it-sys.fin.africa.com
0 DS RR in the parent zone found


3. Name Servers

DomainNameserverNS-IP
www.it-sys.fin.africa.com
  zone-ds.registry.net.za

it-sys.fin.africa.com
  zone-ds.registry.net.za

fin.africa.com
  zone-ds.registry.net.za

africa.com
  ns1.dns.business
157.90.205.138
Falkenstein/Saxony/Germany (DE) - Hetzner Online GmbH


 
2a01:4f8:252:4295::9d5a:cd8a
Falkenstein/Saxony/Germany (DE) - Hetzner Online GmbH


  ns2.dns.business
147.135.106.236
St Louis/Missouri/United States (US) - OVH US LLC


 
2604:2dc0:200:2eb::2
Reston/Virginia/United States (US) - OVH SAS


  ns2us.dns.business
147.135.106.236
St Louis/Missouri/United States (US) - OVH US LLC


 
2604:2dc0:200:2eb::2
Reston/Virginia/United States (US) - OVH SAS


  ns3.dns.business
206.223.136.200
Midrand/Gauteng/South Africa (ZA) - ZA CENTRAL REGISTRY NPC


 
2001:43f8:30::200
Midrand/Gauteng/South Africa (ZA) - ZA CENTRAL REGISTRY NPC


  ns4.dns.business / s2.bnx
194.146.106.74
Stockholm/Stockholm County/Sweden (SE) - Netnod AB


 
2001:67c:1010:18::53
Zurich/Switzerland (CH) - DNSNODE Anycast RIPE sites


  zone-ds.registry.net.za

com
  a.gtld-servers.net / nnn1-par6


  b.gtld-servers.net / nnn1-elpar7


  c.gtld-servers.net / nnn1-par6


  d.gtld-servers.net / nnn1-par6


  e.gtld-servers.net / nnn1-par6


  f.gtld-servers.net / nnn1-fra5


  g.gtld-servers.net / nnn1-fra5


  h.gtld-servers.net / nnn1-fra5


  i.gtld-servers.net / nnn1-fra5


  j.gtld-servers.net / nnn1-lon5


  k.gtld-servers.net / nnn1-lon5


  l.gtld-servers.net / nnn1-lon5


  m.gtld-servers.net / nnn1-lon5


4. SOA-Entries


Domain:com
Zone-Name:com
Primary:a.gtld-servers.net
Mail:nstld.verisign-grs.com
Serial:1669295853
Refresh:1800
Retry:900
Expire:604800
TTL:86400
num Entries:12


Domain:com
Zone-Name:com
Primary:a.gtld-servers.net
Mail:nstld.verisign-grs.com
Serial:1669295868
Refresh:1800
Retry:900
Expire:604800
TTL:86400
num Entries:1


Domain:africa.com
Zone-Name:
Primary:
Mail:
Serial:
Refresh:
Retry:
Expire:
TTL:
num Entries:1


Domain:africa.com
Zone-Name:africa.com
Primary:zone-ds.registry.net.za
Mail:support.dns.net.za
Serial:2022112461
Refresh:28800
Retry:7200
Expire:2592000
TTL:28800
num Entries:10


Domain:fin.africa.com
Zone-Name:
Primary:
Mail:
Serial:
Refresh:
Retry:
Expire:
TTL:
num Entries:1


Domain:it-sys.fin.africa.com
Zone-Name:
Primary:
Mail:
Serial:
Refresh:
Retry:
Expire:
TTL:
num Entries:1


Domain:www.it-sys.fin.africa.com
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







7. Comments


1. General Results, most used to calculate the result

Aname "it-sys.fin.africa.com" is subdomain, public suffix is ".africa.com", top-level-domain is ".com", top-level-domain-type is "generic", tld-manager is "VeriSign Global Registry Services", num .com-domains preloaded: 81363 (complete: 210599)
AGood: No asked Authoritative Name Server had a timeout
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.
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.it-sys.fin.africa.com

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:: 5 Root-climbing DNS Queries required to find all IPv4- and IPv6-Addresses of 5 Name Servers.
AInfo:: 5 Queries complete, 5 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.dns.business (157.90.205.138, 2a01:4f8:252:4295::9d5a:cd8a), ns1.dns.business (157.90.205.138, 2a01:4f8:252:4295::9d5a:cd8a), ns2us.dns.business (147.135.106.236, 2604:2dc0:200:2eb::2), ns3.dns.business (2001:43f8:30::200, 206.223.136.200), ns4.dns.business (194.146.106.74, 2001:67c:1010:18::53)
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:: 6 different Name Servers found: ns1.dns.business, ns2.dns.business, ns2us.dns.business, ns3.dns.business, ns4.dns.business, zone-ds.registry.net.za, 3 Name Servers included in Delegation: ns2.dns.business, ns3.dns.business, ns4.dns.business, 4 Name Servers included in 2 Zone definitions: ns1.dns.business, ns2us.dns.business, ns3.dns.business, ns4.dns.business, 1 Name Servers listed in SOA.Primary: zone-ds.registry.net.za.
AGood: Only one SOA.Primary Name Server found.: zone-ds.registry.net.za.
Error: SOA.Primary Name Server not included in the delegation set.: zone-ds.registry.net.za.
XFatal: Inconsistency between delegation and zone. The set of NS records served by the authoritative name servers must match those proposed for the delegation in the parent zone. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: ns1.dns.business (157.90.205.138): Delegation: ns2.dns.business, ns3.dns.business, ns4.dns.business, Zone: ns1.dns.business, ns2us.dns.business, ns3.dns.business, ns4.dns.business. Name Servers defined in Delegation, missing in Zone: ns2.dns.business.Name Servers defined in Zone, missing in Delegation: ns1.dns.business, ns2us.dns.business.
XFatal: Inconsistency between delegation and zone. The set of NS records served by the authoritative name servers must match those proposed for the delegation in the parent zone. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: ns1.dns.business (2a01:4f8:252:4295::9d5a:cd8a): Delegation: ns2.dns.business, ns3.dns.business, ns4.dns.business, Zone: ns1.dns.business, ns2us.dns.business, ns3.dns.business, ns4.dns.business. Name Servers defined in Delegation, missing in Zone: ns2.dns.business.Name Servers defined in Zone, missing in Delegation: ns1.dns.business, ns2us.dns.business.
XFatal: Inconsistency between delegation and zone. The set of NS records served by the authoritative name servers must match those proposed for the delegation in the parent zone. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: ns2.dns.business (147.135.106.236): Delegation: ns2.dns.business, ns3.dns.business, ns4.dns.business, Zone: ns1.dns.business, ns2us.dns.business, ns3.dns.business, ns4.dns.business. Name Servers defined in Delegation, missing in Zone: ns2.dns.business.Name Servers defined in Zone, missing in Delegation: ns1.dns.business, ns2us.dns.business.
XFatal: Inconsistency between delegation and zone. The set of NS records served by the authoritative name servers must match those proposed for the delegation in the parent zone. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: ns2.dns.business (2604:2dc0:200:2eb::2): Delegation: ns2.dns.business, ns3.dns.business, ns4.dns.business, Zone: ns1.dns.business, ns2us.dns.business, ns3.dns.business, ns4.dns.business. Name Servers defined in Delegation, missing in Zone: ns2.dns.business.Name Servers defined in Zone, missing in Delegation: ns1.dns.business, ns2us.dns.business.
XFatal: Inconsistency between delegation and zone. The set of NS records served by the authoritative name servers must match those proposed for the delegation in the parent zone. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: ns2us.dns.business (147.135.106.236): Delegation: ns2.dns.business, ns3.dns.business, ns4.dns.business, Zone: ns1.dns.business, ns2us.dns.business, ns3.dns.business, ns4.dns.business. Name Servers defined in Delegation, missing in Zone: ns2.dns.business.Name Servers defined in Zone, missing in Delegation: ns1.dns.business, ns2us.dns.business.
XFatal: Inconsistency between delegation and zone. The set of NS records served by the authoritative name servers must match those proposed for the delegation in the parent zone. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: ns2us.dns.business (2604:2dc0:200:2eb::2): Delegation: ns2.dns.business, ns3.dns.business, ns4.dns.business, Zone: ns1.dns.business, ns2us.dns.business, ns3.dns.business, ns4.dns.business. Name Servers defined in Delegation, missing in Zone: ns2.dns.business.Name Servers defined in Zone, missing in Delegation: ns1.dns.business, ns2us.dns.business.
XFatal: Inconsistency between delegation and zone. The set of NS records served by the authoritative name servers must match those proposed for the delegation in the parent zone. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: ns3.dns.business (206.223.136.200): Delegation: ns2.dns.business, ns3.dns.business, ns4.dns.business, Zone: ns1.dns.business, ns2us.dns.business, ns3.dns.business, ns4.dns.business. Name Servers defined in Delegation, missing in Zone: ns2.dns.business.Name Servers defined in Zone, missing in Delegation: ns1.dns.business, ns2us.dns.business.
XFatal: Inconsistency between delegation and zone. The set of NS records served by the authoritative name servers must match those proposed for the delegation in the parent zone. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: ns3.dns.business (2001:43f8:30::200): Delegation: ns2.dns.business, ns3.dns.business, ns4.dns.business, Zone: ns1.dns.business, ns2us.dns.business, ns3.dns.business, ns4.dns.business. Name Servers defined in Delegation, missing in Zone: ns2.dns.business.Name Servers defined in Zone, missing in Delegation: ns1.dns.business, ns2us.dns.business.
XFatal: Inconsistency between delegation and zone. The set of NS records served by the authoritative name servers must match those proposed for the delegation in the parent zone. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: ns4.dns.business (194.146.106.74): Delegation: ns2.dns.business, ns3.dns.business, ns4.dns.business, Zone: ns1.dns.business, ns2us.dns.business, ns3.dns.business, ns4.dns.business. Name Servers defined in Delegation, missing in Zone: ns2.dns.business.Name Servers defined in Zone, missing in Delegation: ns1.dns.business, ns2us.dns.business.
XFatal: Inconsistency between delegation and zone. The set of NS records served by the authoritative name servers must match those proposed for the delegation in the parent zone. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: ns4.dns.business (2001:67c:1010:18::53): Delegation: ns2.dns.business, ns3.dns.business, ns4.dns.business, Zone: ns1.dns.business, ns2us.dns.business, ns3.dns.business, ns4.dns.business. Name Servers defined in Delegation, missing in Zone: ns2.dns.business.Name Servers defined in Zone, missing in Delegation: ns1.dns.business, ns2us.dns.business.
AGood: All Name Server Domain Names have a Public Suffix.
Error: Name Server Domain Names with Public Suffix and without ip address found.: 1 Name Servers without ipv4 and ipv6: 1

AInfo: Ipv4-Subnet-list: 5 Name Servers, 4 different subnets (first Byte): 147., 157., 194., 206., 4 different subnets (first two Bytes): 147.135., 157.90., 194.146., 206.223., 4 different subnets (first three Bytes): 147.135.106., 157.90.205., 194.146.106., 206.223.136.
AGood: Name Server IPv4-addresses from different subnet found:
AInfo: IPv6-Subnet-list: 5 Name Servers with IPv6, 3 different subnets (first block): 2001:, 2604:, 2a01:, 4 different subnets (first two blocks): 2001:067c:, 2001:43f8:, 2604:2dc0:, 2a01:04f8:, 4 different subnets (first three blocks): 2001:067c:1010:, 2001:43f8:0030:, 2604:2dc0:0200:, 2a01:04f8:0252:, 4 different subnets (first four blocks): 2001:067c:1010:0018:, 2001:43f8:0030:0000:, 2604:2dc0:0200:02eb:, 2a01:04f8:0252:4295:
AGood: Name Server IPv6 addresses from different subnets found.
Nameserver doesn't pass all EDNS-Checks: zone-ds.registry.net.za: 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: zone-ds.registry.net.za: 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: zone-ds.registry.net.za: 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: zone-ds.registry.net.za: 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: 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: 76540 milliseconds, 76.540 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: ns1.dns.business, ns2.dns.business, ns2us.dns.business, ns3.dns.business, ns4.dns.business

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

Answer: v0n0.nic.business, v0n1.nic.business, v0n2.nic.business, v0n3.nic.business, v2n0.nic.business, v2n1.nic.business
2
ns1.dns.business: 157.90.205.138, 2a01:4f8:252:4295::9d5a:cd8a
NS
v0n0.nic.business (2a01:8840:22::38)

Answer: ns2us.dns.business
147.135.106.236, 2604:2dc0:200:2eb::2

Answer: ns3.dns.business
2001:43f8:30::200, 206.223.136.200

Answer: ns4.dns.business
194.146.106.74, 2001:67c:1010:18::53
3
ns2.dns.business
NS
v0n0.nic.business (2a01:8840:22::38)

Answer: ns1.dns.business, ns2us.dns.business, ns3.dns.business, ns4.dns.business

Answer: ns1.dns.business
157.90.205.138, 2a01:4f8:252:4295::9d5a:cd8a

Answer: ns2us.dns.business
147.135.106.236, 2604:2dc0:200:2eb::2

Answer: ns3.dns.business
2001:43f8:30::200, 206.223.136.200

Answer: ns4.dns.business
194.146.106.74, 2001:67c:1010:18::53
4
ns2.dns.business: 147.135.106.236
A
ns1.dns.business (2a01:4f8:252:4295::9d5a:cd8a)
5
ns2.dns.business: 2604:2dc0:200:2eb::2
AAAA
ns1.dns.business (2a01:4f8:252:4295::9d5a:cd8a)


13. CAA - Entries

DomainnameflagNameValue∑ Queries∑ Timeout
africa.com
0

no CAA entry found
1
0
com
0

no CAA entry found
1
0


14. TXT - Entries

No TXT entries found


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 Ciphers found


17. Portchecks

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



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