gtai.de

Checked 21 October 2026, 22:41 UTC · via 8.8.8.8
!Passed with warnings
24 passed 1 warning 0 failed 4 info

Registration

info

.de country-code

Found

TLD
.de (country-code)
ICANN policies apply
no

Checks

  • i
    .de is a country-code TLD (ccTLD)
    Country-code TLD: governed by its local registry under national policy, not by an ICANN contract. Registrar accreditation, dispute resolution and RDAP/WHOIS rules are set by the registry.
    #1
  • ✓ TLD delegated and signed #2
    .de is delegated in the root zone and DNSSEC-signed.
  • i
    Registration data not available
    No registration data via RDAP: the registry of .de offers no RDAP service. Many ccTLD registries don't offer RDAP; check the registry's WHOIS instead.
    #3

Delegation

info

ns1-eu.123ns.eu, ns2-eu.123ns.de, ns3-eu.123ns.eu, ns4-eu.123ns.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1-eu.123ns.eu, ns2-eu.123ns.de, ns3-eu.123ns.eu, ns4-eu.123ns.de
NS in the zone
ns1-eu.123ns.eu, ns2-eu.123ns.de, ns3-eu.123ns.eu, ns4-eu.123ns.de
NameserverAddressesNetwork (AS)Glue
ns1-eu.123ns.eu82.165.64.26 2001:8d8:1801:71::1AS8560 IONOS-AS - IONOS SE, DE AS8560 IONOS-AS - IONOS SE, DE-
ns2-eu.123ns.de136.243.153.243 2a01:4f8:171:1c61::2AS24940 HETZNER-AS - Hetzner Online GmbH, DE AS24940 HETZNER-AS - Hetzner Online GmbH, DE-
ns3-eu.123ns.eu81.92.4.138AS8820 TAL-DE - tal.de GmbH, DE-
ns4-eu.123ns.de85.215.121.239 2a01:239:0:c9::1AS8560 IONOS-AS - IONOS SE, DE AS8560 IONOS-AS - IONOS SE, DE85.215.121.239 2a01:239:0:c9::1

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1-eu.123ns.eu, ns2-eu.123ns.de, ns3-eu.123ns.eu, ns4-eu.123ns.de.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ No glue needed #8
    All nameservers are outside the zone, so no glue records are needed.
  • ✓ All names resolve #9
    Every nameserver name has an address and is not an alias.
  • ✓ Nameservers in different networks #10
    The nameservers are spread over 4 IPv4 /24s and 3 IPv6 /48s.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS24940 (HETZNER-AS - Hetzner Online GmbH, DE): 2 addresses; AS8560 (IONOS-AS - IONOS SE, DE): 4 addresses; AS8820 (TAL-DE - tal.de GmbH, DE): 1 address.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .de, .eu.
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns3-eu.123ns.eu.
    #13

Nameservers

pass

7 of 7 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1-eu.123ns.eu 82.165.64.26NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns1-eu.123ns.eu 2001:8d8:1801:71::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns2-eu.123ns.de 136.243.153.243NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns2-eu.123ns.de 2a01:4f8:171:1c61::2NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns3-eu.123ns.eu 81.92.4.138NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns4-eu.123ns.de 85.215.121.239NOERROR, 12 ms, authoritativenoyes / yesrefused-
ns4-eu.123ns.de 2a01:239:0:c9::1NOERROR, 13 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 7 nameserver addresses answered.
  • ✓ All authoritative #15
    Every responding nameserver answers authoritatively for the zone.
  • ✓ No recursion #16
    The nameservers do not answer recursive queries for other domains.
  • ✓ No version disclosed #17
    The nameservers don't reveal their software version.
  • ✓ Zone transfers refused #18
    No nameserver allows a zone transfer to the public.
  • ✓ TCP supported #19
    All nameservers answer over TCP.
  • ✓ EDNS supported #20
    All nameservers support EDNS(0).
  • ✓ Public addresses #21
    All nameserver addresses are publicly routable.

SOA

pass

serial 2026100100 · primary ns1-eu.123ns.eu

Found

Primary (MNAME)
ns1-eu.123ns.eu
Contact (RNAME)
hostmaster.123ns.eu
Serial
2026100100
Refresh / retry
43200 s / 14400 s
Expire
3600000 s
Negative TTL
21400 s

Serial per nameserver

NameserverSerial
ns1-eu.123ns.eu (82.165.64.26)2026100100
ns1-eu.123ns.eu (2001:8d8:1801:71::1)2026100100
ns2-eu.123ns.de (136.243.153.243)2026100100
ns2-eu.123ns.de (2a01:4f8:171:1c61::2)2026100100
ns3-eu.123ns.eu (81.92.4.138)2026100100
ns4-eu.123ns.de (85.215.121.239)2026100100
ns4-eu.123ns.de (2a01:239:0:c9::1)2026100100

Checks

  • ✓ Serial 2026100100 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 12h, retry 4h, expire 1000h, negative TTL 5h56m40s.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1-eu.123ns.eu is one of the listed nameservers.
  • ✓ Contact hostmaster@123ns.eu #25
    The SOA RNAME hostmaster.123ns.eu means hostmaster@123ns.eu.
  • ✓ Date-based serial #26
    The serial 2026100100 follows the YYYYMMDDnn convention (2026-10-01).

DNSSEC

warn

Not signed

Found

Validated by resolver
no

Checks

  • !
    Not signed
    The zone is not signed with DNSSEC, so answers can be spoofed. Enable DNSSEC at your DNS provider and publish the DS record at your registrar.
    #27

Records

info

22 records at the apex

Found

Read from
82.165.64.26:53
TypeValueTTL
SOAns1-eu.123ns.eu. hostmaster.123ns.eu. 2026100100 43200 14400 3600000 2140086400
NSns3-eu.123ns.eu.86400
NSns2-eu.123ns.de.86400
NSns1-eu.123ns.eu.86400
NSns4-eu.123ns.de.86400
A167.86.50.19486400
MX10 gtai-de.mail.protection.outlook.com.600
TXT"google-site-verification=f2ClJwd94-hImZe6S_WtYYjmsduZDOBsQtskwNTa0aY"86400
TXT"sd6-71a-43s"86400
TXT"tmes=0de4694cb6522324cbd7c467d30cd491"86400
TXT"_telesec-domain-validation=343579_2025-08-25_cRaGL0I6P3PlnZDk5ymr4P7KGWGV8PysnmU1kCssSBcF9K2XLT"86400
TXT"MS=ms93531849"86400
TXT"anthropic-domain-verification-v6jcw5=eCDpVm3j58EQyNFAM3Xx6l7By"86400
TXT"v=spf1 ip4:91.221.223.2 ip4:91.221.223.11 ip4:91.221.223.12 include:spf.protection.outlook.com include:spf.init.de include:_spf.jpberlin.de mx -all"86400
TXT"201906201200505suowlqvs6p4k6phnufgnpzch6p15h4g5k0f7755vz45pfu3ko"86400
TXT"atlassian-domain-verification=OyOYOoNNvaFvY5pf76t0Uibtau1C2L1SHvCty2xAxrbBXz1zYeYhJ9RWjrTLHRH3"86400
TXT"google-site-verification=GqA5MH_Pbw2I_boffTmTAuydbL2CEMia9L9R1Gkdkew"86400
TXT"duo_sso_verification=gmAGmvhrRVhtn8f7iQEIdmwiyH3J8dEuifU2vXA5zEyGH22WWjcLKxtB4l0xTvfA"86400
TXT"apple-domain-verification=VkEcOmaKHikQV1E7"86400
TXT"d365mktkey=JoHrsVUt1iAmmTauPZtyGhVQHsO0xvxnk7nx19psvxkx"86400
TXT"_telesec-domain-validation=326199_2024-01-09_XJ2nmf270Fuvt7YbGCOUdtgDzr2ourkFzQf5Uxih63vBWxTHN8"86400
TXT"atlassian-sending-domain-verification=33680207-2a3f-4b72-aa03-8be83b747b05"86400

Checks

  • ✓ TTLs within range #32
    TTLs: A 1d, MX 10m, NS 1d.
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • i
    No CAA records
    Without CAA records any certificate authority may issue certificates for this domain. A CAA record limits issuance to the CAs you use.
    #35