goettingen.de

Checked 21 October 2026, 22:40 UTC · via 8.8.8.8
!Passed with warnings
25 passed 1 warning 0 failed 3 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

pass

pns1.sernet.de, pns2.sernet.net, pns3.sernet.de, pns4.sernet.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
pns1.sernet.de, pns2.sernet.net, pns3.sernet.de, pns4.sernet.net
NS in the zone
pns1.sernet.de, pns2.sernet.net, pns3.sernet.de, pns4.sernet.net
NameserverAddressesNetwork (AS)Glue
pns1.sernet.de95.130.16.246 2a02:2940:0:a0d1::246AS13246 INETWIRE-AS - Key-Systems GmbH, DE AS13246 INETWIRE-AS - Key-Systems GmbH, DE-
pns2.sernet.net95.130.17.218 2a02:2940:0:a0d2::218AS13246 INETWIRE-AS - Key-Systems GmbH, DE AS13246 INETWIRE-AS - Key-Systems GmbH, DE-
pns3.sernet.de217.146.22.194 2a00:11c0:e:766::2AS42473 AS-ANEXIA - Anexia Cloud Solutions GmbH, AT AS42473 AS-ANEXIA - Anexia Cloud Solutions GmbH, AT-
pns4.sernet.net144.76.91.137 2a01:4f8:192:2187::2AS24940 HETZNER-AS - Hetzner Online GmbH, DE AS24940 HETZNER-AS - Hetzner Online GmbH, DE-

Checks

  • ✓ 4 nameservers #6
    Delegated to pns1.sernet.de, pns2.sernet.net, pns3.sernet.de, pns4.sernet.net.
  • ✓ 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: AS13246 (INETWIRE-AS - Key-Systems GmbH, DE): 4 addresses; AS24940 (HETZNER-AS - Hetzner Online GmbH, DE): 2 addresses; AS42473 (AS-ANEXIA - Anexia Cloud Solutions GmbH, AT): 2 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .de, .net.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

pass

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
pns1.sernet.de 95.130.16.246NOERROR, 25 ms, authoritativenoyes / yesrefused-
pns1.sernet.de 2a02:2940:0:a0d1::246NOERROR, 15 ms, authoritativenoyes / yesrefused-
pns2.sernet.net 95.130.17.218NOERROR, 16 ms, authoritativenoyes / yesrefused-
pns2.sernet.net 2a02:2940:0:a0d2::218NOERROR, 22 ms, authoritativenoyes / yesrefused-
pns3.sernet.de 217.146.22.194NOERROR, 3 ms, authoritativenoyes / yesrefused-
pns3.sernet.de 2a00:11c0:e:766::2NOERROR, 4 ms, authoritativenoyes / yesrefused-
pns4.sernet.net 144.76.91.137NOERROR, 3 ms, authoritativenoyes / yesrefused-
pns4.sernet.net 2a01:4f8:192:2187::2NOERROR, 3 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 8 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 2026101202 · primary pns1.sernet.de

Found

Primary (MNAME)
pns1.sernet.de
Contact (RNAME)
hostmaster.domainbestellsystem.de
Serial
2026101202
Refresh / retry
28800 s / 3600 s
Expire
1209600 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
pns1.sernet.de (95.130.16.246)2026101202
pns1.sernet.de (2a02:2940:0:a0d1::246)2026101202
pns2.sernet.net (95.130.17.218)2026101202
pns2.sernet.net (2a02:2940:0:a0d2::218)2026101202
pns3.sernet.de (217.146.22.194)2026101202
pns3.sernet.de (2a00:11c0:e:766::2)2026101202
pns4.sernet.net (144.76.91.137)2026101202
pns4.sernet.net (2a01:4f8:192:2187::2)2026101202

Checks

  • ✓ Serial 2026101202 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 1h, expire 14d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver pns1.sernet.de is one of the listed nameservers.
  • ✓ Contact hostmaster@domainbestellsystem.de #25
    The SOA RNAME hostmaster.domainbestellsystem.de means hostmaster@domainbestellsystem.de.
  • ✓ Date-based serial #26
    The serial 2026101202 follows the YYYYMMDDnn convention (2026-10-12).

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

14 records at the apex

Found

Read from
95.130.16.246:53
TypeValueTTL
SOApns1.sernet.de. hostmaster.domainbestellsystem.de. 2026101202 28800 3600 1209600 36003600
NSpns2.sernet.net.86400
NSpns4.sernet.net.86400
NSpns1.sernet.de.86400
NSpns3.sernet.de.86400
A194.13.135.52300
MX10 mail1.goettingen.de.3600
MX50 mail3.goettingen.de.3600
MX15 mail2.goettingen.de.3600
TXT"Stadt Goettingen, Germany"3600
TXT"v=spf1 mx include:_spf.nol-is.de -all"3600
TXT"cisco-ci-domain-verification=a33db38d7d2c013d7f98cca2e95999ddca53dcc0e5182785e8bbcbb8846982b"3600
TXT"atlassian-domain-verification=3hcHrf7G2j5ZEMAvoDerYaPgxT/v7mDmFWfOj5qxvAz9ViCuVtTdnwumnuMhjHM5"3600
TXT"google-site-verification=Wx2Aucav2N9SLqbb0jtnS1AVBzoYwMVlF9PqMY6wrF0"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 1h, 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