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

Checked:
05.07.2025 18:49:16

Older results

X - 21.04.2025 19:10:14

1. IP-Addresses

Host	Type	IP-Address	is auth.	∑ Queries	∑ Timeout
o365filtering.com	A		yes	2	1
	AAAA		yes
www.o365filtering.com		Name Error	yes	2	1
*.o365filtering.com	A	Name Error	yes
	A	Name Error	yes
	AAAA	Name Error	yes
	AAAA	Name Error	yes
	CNAME	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


	4 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 46441, Flags 256


	Public Key with Algorithm 8, KeyTag 53148, Flags 256


	1 RRSIG RR to validate DNSKEY RR found


	RRSIG-Owner (root), Algorithm: 8, 0 Labels, original TTL: 172800 sec, Signature-expiration: 22.07.2025, 00:00:00 +, Signature-Inception: 01.07.2025, 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: com
com	1 DS RR in the parent zone found


	DS with Algorithm 13, KeyTag 19718, DigestType 2 and Digest isuwzSj0ElCoCkkTiUJNNBUi2Uaw2gwCkfLT13HXgFo=


	1 RRSIG RR to validate DS RR found


	RRSIG-Owner com., Algorithm: 8, 1 Labels, original TTL: 86400 sec, Signature-expiration: 18.07.2025, 05:00:00 +, Signature-Inception: 05.07.2025, 04:00:00 +, KeyTag 46441, Signer-Name: (root)


	• Status: Good - Algorithmus 8 and DNSKEY with KeyTag 46441 used to validate the DS RRSet in the parent zone


	2 DNSKEY RR found


	Public Key with Algorithm 13, KeyTag 19718, Flags 257 (SEP = Secure Entry Point)


	Public Key with Algorithm 13, KeyTag 40097, Flags 256


	1 RRSIG RR to validate DNSKEY RR found


	RRSIG-Owner com., Algorithm: 13, 1 Labels, original TTL: 86400 sec, Signature-expiration: 16.07.2025, 14:02:35 +, Signature-Inception: 01.07.2025, 13:57:35 +, KeyTag 19718, Signer-Name: com


	• Status: Good - Algorithmus 13 and DNSKEY with KeyTag 19718 used to validate the DNSKEY RRSet


	• Status: Valid Chain of trust. Parent-DS with Algorithm 13, KeyTag 19718, DigestType 2 and Digest "isuwzSj0ElCoCkkTiUJNNBUi2Uaw2gwCkfLT13HXgFo=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone

Zone: o365filtering.com
o365filtering.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 "fm8jeekbf333rfra9b59j0240ebv17aj" between the hashed NSEC3-owner "fm8j9obslh9nepq97e2k9rh21tq0gm7o" and the hashed NextOwner "fm8jhkaferojv5njag7kbci896aeggka". So the parent zone confirmes the not-existence of a DS RR. Bitmap: NS, DS, RRSIG Validated: RRSIG-Owner fm8j9obslh9nepq97e2k9rh21tq0gm7o.com., Algorithm: 13, 2 Labels, original TTL: 900 sec, Signature-expiration: 09.07.2025, 01:32:31 +, Signature-Inception: 02.07.2025, 00:22:31 +, KeyTag 40097, 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 "ck0q3udg8cekkae7rukpgct1dvssh8ll". So that domain name is the Closest Encloser of "o365filtering.com". Opt-Out: True. Bitmap: NS, SOA, RRSIG, DNSKEY, NSEC3PARAM Validated: RRSIG-Owner ck0pojmg874ljref7efn8430qvit8bsm.com., Algorithm: 13, 2 Labels, original TTL: 900 sec, Signature-expiration: 10.07.2025, 00:25:09 +, Signature-Inception: 02.07.2025, 23:15:09 +, KeyTag 40097, Signer-Name: com


	0 DNSKEY RR found




Zone: www.o365filtering.com
www.o365filtering.com	0 DS RR in the parent zone found

3. Name Servers

Domain	Nameserver	NS-IP
www.o365filtering.com	• nso12.o365filtering.com
o365filtering.com	T nso12.o365filtering.com	104.47.38.8 Montreal/Quebec/Canada (CA) - Microsoft Corporation
	• nso13.o365filtering.com	104.47.2.8 Castlepollard/Leinster/Ireland (IE) - Microsoft Corporation	•
	• nso14.o365filtering.com	104.47.124.8 Hong Kong/Kowloon/Hong Kong (HK) - Microsoft Corporation	•
	• nso21.o365filtering.com	104.47.40.8 Moses Lake/Washington/United States (US) - Microsoft Corporation	•
	T nso22.o365filtering.com	104.47.44.8 Ashburn/Virginia/United States (US) - Microsoft Corporation
	• nso23.o365filtering.com	104.47.4.8 Abu Dhabi/United Arab Emirates (AE) - Microsoft Corporation	•
	T nso24.o365filtering.com	104.47.44.8 Ashburn/Virginia/United States (US) - Microsoft Corporation
com	• a.gtld-servers.net / nnn1-par6		•
	• b.gtld-servers.net / nnn1-eltxl1		•
	• c.gtld-servers.net / nnn1-par6		•
	• d.gtld-servers.net / nnn1-par6		•
	• e.gtld-servers.net / nnn1-par6		•
	• f.gtld-servers.net / nnn1-defra-4		•
	• g.gtld-servers.net / nnn1-defra-4		•
	• h.gtld-servers.net / nnn1-defra-4		•
	• i.gtld-servers.net / nnn1-defra-4		•
	• j.gtld-servers.net / nnn1-frmrs-2		•
	• k.gtld-servers.net / nnn1-frmrs-2		•
	• l.gtld-servers.net / nnn1-frmrs-2		•
	• m.gtld-servers.net / nnn1-frmrs-2		•

4. SOA-Entries

Domain:	com
Zone-Name:	com
Primary:	a.gtld-servers.net
Mail:	nstld.verisign-grs.com
Serial:	1751734138
Refresh:	1800
Retry:	900
Expire:	604800
TTL:	900
num Entries:	10

Domain:	com
Zone-Name:	com
Primary:	a.gtld-servers.net
Mail:	nstld.verisign-grs.com
Serial:	1751734148
Refresh:	1800
Retry:	900
Expire:	604800
TTL:	900
num Entries:	3

Domain:	o365filtering.com
Zone-Name:
Primary:
Mail:
Serial:
Refresh:
Retry:
Expire:
TTL:
num Entries:	3

Domain:	o365filtering.com
Zone-Name:	o365filtering.com
Primary:	nso12.o365filtering.com
Mail:	hostmaster.o365filtering.com
Serial:	2024072215
Refresh:	10800
Retry:	3600
Expire:	604800
TTL:	60
num Entries:	2

Domain:	o365filtering.com
Zone-Name:	o365filtering.com
Primary:	nso12.o365filtering.com
Mail:	hostmaster.o365filtering.com
Serial:	2024072216
Refresh:	10800
Retry:	3600
Expire:	604800
TTL:	60
num Entries:	2

Domain:	www.o365filtering.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

Domainname	Http-Status	redirect	Sec.	G
•

7. Comments

	1. General Results, most used to calculate the result
A	name "o365filtering.com" is domain, public suffix is ".com", top-level-domain is ".com", top-level-domain-type is "generic", tld-manager is "VeriSign Global Registry Services", num .com-domains preloaded: 105960 (complete: 271405)
A	DNS: "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.
X	Fatal error: Nameserver doesn't support TCP connection: nso12.o365filtering.com / 104.47.38.8: Timeout
X	Fatal error: Nameserver doesn't support TCP connection: nso22.o365filtering.com / 104.47.44.8: Timeout
X	Fatal error: Nameserver doesn't support TCP connection: nso24.o365filtering.com / 104.47.44.8: Timeout
B	No _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.o365filtering.com
	2. Header-Checks
U		No https result with http status 2 or 4 (standard-check) found, no header checked.
	3. DNS- and NameServer - Checks
A	Info:: 2 Root-climbing DNS Queries required to find all IPv4- and IPv6-Addresses of 7 Name Servers.
A	Info:: 2 Queries complete, 2 with IPv6, 0 with IPv4.
A	Good: All DNS Queries done via IPv6.
A	Good: 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.nso12.o365filtering.com (104.47.38.8), nso13.o365filtering.com (104.47.2.8), nso14.o365filtering.com (104.47.124.8), nso21.o365filtering.com (104.47.40.8), nso22.o365filtering.com (104.47.44.8), nso23.o365filtering.com (104.47.4.8), nso24.o365filtering.com (104.47.121.8)
A	Good (1 - 3.0):: An average of 0.3 queries per domain name server required to find all ip addresses of all name servers.
A	Info:: 7 different Name Servers found: nso12.o365filtering.com, nso13.o365filtering.com, nso14.o365filtering.com, nso21.o365filtering.com, nso22.o365filtering.com, nso23.o365filtering.com, nso24.o365filtering.com, 7 Name Servers included in Delegation: nso12.o365filtering.com, nso13.o365filtering.com, nso14.o365filtering.com, nso21.o365filtering.com, nso22.o365filtering.com, nso23.o365filtering.com, nso24.o365filtering.com, 6 Name Servers included in 2 Zone definitions: nso12.o365filtering.com, nso13.o365filtering.com, nso14.o365filtering.com, nso21.o365filtering.com, nso22.o365filtering.com, nso23.o365filtering.com, 1 Name Servers listed in SOA.Primary: nso12.o365filtering.com.
A	Good: Only one SOA.Primary Name Server found.: nso12.o365filtering.com.
A	Good: SOA.Primary Name Server included in the delegation set.: nso12.o365filtering.com.
X	Fatal: 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.: nso13.o365filtering.com (104.47.2.8): Delegation: nso12.o365filtering.com, nso13.o365filtering.com, nso14.o365filtering.com, nso21.o365filtering.com, nso22.o365filtering.com, nso23.o365filtering.com, nso24.o365filtering.com, Zone: nso12.o365filtering.com, nso13.o365filtering.com, nso14.o365filtering.com, nso21.o365filtering.com, nso22.o365filtering.com, nso23.o365filtering.com. Name Servers defined in Delegation, missing in Zone: nso24.o365filtering.com.
X	Fatal: 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.: nso14.o365filtering.com (104.47.124.8): Delegation: nso12.o365filtering.com, nso13.o365filtering.com, nso14.o365filtering.com, nso21.o365filtering.com, nso22.o365filtering.com, nso23.o365filtering.com, nso24.o365filtering.com, Zone: nso12.o365filtering.com, nso13.o365filtering.com, nso14.o365filtering.com, nso21.o365filtering.com, nso22.o365filtering.com, nso23.o365filtering.com. Name Servers defined in Delegation, missing in Zone: nso24.o365filtering.com.
X	Fatal: 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.: nso21.o365filtering.com (104.47.40.8): Delegation: nso12.o365filtering.com, nso13.o365filtering.com, nso14.o365filtering.com, nso21.o365filtering.com, nso22.o365filtering.com, nso23.o365filtering.com, nso24.o365filtering.com, Zone: nso12.o365filtering.com, nso13.o365filtering.com, nso14.o365filtering.com, nso21.o365filtering.com, nso22.o365filtering.com, nso23.o365filtering.com. Name Servers defined in Delegation, missing in Zone: nso24.o365filtering.com.
X	Fatal: 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.: nso23.o365filtering.com (104.47.4.8): Delegation: nso12.o365filtering.com, nso13.o365filtering.com, nso14.o365filtering.com, nso21.o365filtering.com, nso22.o365filtering.com, nso23.o365filtering.com, nso24.o365filtering.com, Zone: nso12.o365filtering.com, nso13.o365filtering.com, nso14.o365filtering.com, nso21.o365filtering.com, nso22.o365filtering.com, nso23.o365filtering.com. Name Servers defined in Delegation, missing in Zone: nso24.o365filtering.com.
A	Good: All Name Server Domain Names have a Public Suffix.
A	Good: All Name Server Domain Names ending with a Public Suffix have minimal one IPv4- or IPv6 address.
A	Good: All Name Server ip addresses are public.
A	Good: Minimal 2 different name servers (public suffix and public ip address) found: 7 different Name Servers found
	Warning: No Name Server IPv6 address found. IPv6 is the future, so your name servers should be visible via IPv6.: 7 different Name Servers found
	Warning: All Name Servers have the same Top Level Domain / Public Suffix. If there is a problem with that Top Level Domain, your domain may be affected. Better: Use Name Servers with different top level domains.: 7 Name Servers, 1 Top Level Domain: com
	Warning: All Name Servers have the same domain name. If there is a problem with that domain name (or with the name servers of that domain name), your domain may be affected. Better: Use Name Servers with different domain names / different top level domains.: Only one domain name used: o365filtering.com
A	Good: Name servers with different Country locations found: 7 Name Servers, 5 Countries: AE, CA, HK, IE, US
A	Info: Ipv4-Subnet-list: 7 Name Servers, 1 different subnets (first Byte): 104., 1 different subnets (first two Bytes): 104.47., 6 different subnets (first three Bytes): 104.47.124., 104.47.2., 104.47.38., 104.47.4., 104.47.40., 104.47.44.
A	Good: Name Server IPv4-addresses from different subnet found:
X	Nameserver Timeout checking Echo Capitalization: nso12.o365filtering.com / 104.47.38.8
X	Nameserver Timeout checking Echo Capitalization: nso22.o365filtering.com / 104.47.44.8
X	Nameserver Timeout checking Echo Capitalization: nso24.o365filtering.com / 104.47.44.8
X	Nameserver Timeout checking EDNS512: nso12.o365filtering.com / 104.47.38.8
X	Nameserver Timeout checking EDNS512: nso22.o365filtering.com / 104.47.44.8
X	Nameserver Timeout checking EDNS512: nso24.o365filtering.com / 104.47.44.8
	Nameserver doesn't pass all EDNS-Checks: nso12.o365filtering.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.
	Nameserver doesn't pass all EDNS-Checks: nso12.o365filtering.com / 104.47.38.8: 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: nso22.o365filtering.com / 104.47.44.8: 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: nso24.o365filtering.com / 104.47.44.8: 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.
X	Fatal error: Nameservers with different SOA Serial Numbers
A	Good: CAA entries found, creating certificate is limited: digicert.com is allowed to create certificates
A	Good: CAA entries found, creating certificate is limited: entrust.net is allowed to create certificates
A	Good: CAA entries found, creating certificate is limited: globalsign.com is allowed to create certificates
	4. Content- and Performance-critical Checks
A	Good: 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
A	Duration: 259906 milliseconds, 259.906 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. Html-Parsing via https://validator.w3.org/nu/

No https result http status 200 and Content-Type text/html or text/xml found, no Html-Parsing - Check

13. Nameserver - IP-Adresses

Required Root-climbing DNS-Queries to find ip addresses of all Name Servers: nso12.o365filtering.com, nso13.o365filtering.com, nso14.o365filtering.com, nso21.o365filtering.com, nso22.o365filtering.com, nso23.o365filtering.com, nso24.o365filtering.com

QNr.	Domain	Type	NS used
1	com	NS	d.root-servers.net (2001:500:2d::d)
	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	nso12.o365filtering.com: 104.47.38.8	NS	a.gtld-servers.net (2001:503:a83e::2:30)
	Answer: nso13.o365filtering.com 104.47.2.8
	Answer: nso14.o365filtering.com 104.47.124.8
	Answer: nso21.o365filtering.com 104.47.40.8
	Answer: nso22.o365filtering.com 104.47.44.8
	Answer: nso23.o365filtering.com 104.47.4.8
	Answer: nso24.o365filtering.com 104.47.121.8

14. CAA - Entries

Domainname	flag	Name	Value	∑ Queries	∑ Timeout
o365filtering.com	12	unknown	contactemailcaarecordaware@microsoft.com	2	1
	5	issue	digicert.com	2	1
	5	issue	entrust.net	2	1
	5	issue	globalsign.com	2	1
	5	iodef	mailto:domains@microsoft.com	2	1
com	0		no CAA entry found	1	0

15. TXT - Entries

Domainname	TXT Entry	Status	∑ Queries
o365filtering.com	4qk3qnrj1l3d99z5f4xcmmww0hf36jl4	ok	1
_acme-challenge.o365filtering.com		Name Error - The domain name does not exist	1
_acme-challenge.o365filtering.com.o365filtering.com		Name Error - The domain name does not exist	1

16. DomainService - Entries

No DomainServiceEntries entries found

17. Cipher Suites

No Ciphers found

18. Portchecks

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

Permalink: https://check-your-website.server-daten.de/?i=d3fa1076-7f2d-4cc2-9dfb-2eaa10edc654

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