airport-nuernberg.de

Checked 21 October 2026, 21:28 UTC · via 8.8.8.8
!Passed with warnings
21 passed 3 warnings 0 failed 5 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

warn

ns1.airport-nuernberg.de, ns2.airport-nuernberg.de, ns3.airport-nuernberg.de, ns4.airport-nuernberg.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.airport-nuernberg.de, ns2.airport-nuernberg.de, ns3.airport-nuernberg.de, ns4.airport-nuernberg.de
NS in the zone
ns1.airport-nuernberg.de, ns2.airport-nuernberg.de, ns3.airport-nuernberg.de, ns4.airport-nuernberg.de
NameserverAddressesNetwork (AS)Glue
ns1.airport-nuernberg.de217.160.80.161 2001:8d8:fe:53:217:160:80:161AS8560 IONOS-AS - IONOS SE, DE AS8560 IONOS-AS - IONOS SE, DE62.116.159.4 2001:4178:3:a357:62:116:159:4
ns2.airport-nuernberg.de217.160.81.161 2001:8d8:fe:53:217:160:81:161AS8560 IONOS-AS - IONOS SE, DE AS8560 IONOS-AS - IONOS SE, DE217.160.113.37 2001:8d8:580:401:217:160:113:37
ns3.airport-nuernberg.de185.132.35.161 2607:f1c0:fe:53:185:132:35:161AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB89.146.248.4 2a01:130:2000:118:89:146:248:4
ns4.airport-nuernberg.de185.132.34.161 2607:f1c0:fe:53:185:132:34:161AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB74.208.254.4 2607:f1c0:1800:8091:74:208:254:4

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1.airport-nuernberg.de, ns2.airport-nuernberg.de, ns3.airport-nuernberg.de, ns4.airport-nuernberg.de.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • !
    Glue differs from the zone
    The addresses at the parent (glue) differ from the addresses in the zone: ns1.airport-nuernberg.de (glue 62.116.159.4, 2001:4178:3:a357:62:116:159:4, zone 217.160.80.161, 2001:8d8:fe:53:217:160:80:161); ns2.airport-nuernberg.de (glue 217.160.113.37, 2001:8d8:580:401:217:160:113:37, zone 217.160.81.161, 2001:8d8:fe:53:217:160:81:161); ns3.airport-nuernberg.de (glue 89.146.248.4, 2a01:130:2000:118:89:146:248:4, zone 185.132.35.161, 2607:f1c0:fe:53:185:132:35:161); ns4.airport-nuernberg.de (glue 74.208.254.4, 2607:f1c0:1800:8091:74:208:254:4, zone 185.132.34.161, 2607:f1c0:fe:53:185:132:34:161). Update the glue at your registrar.
    #8
  • ✓ 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 2 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS15418 (IONOS-ANYCAST - Fasthosts Internet Limited, GB): 4 addresses; AS8560 (IONOS-AS - IONOS SE, DE): 4 addresses.
  • i
    All nameserver names under .de
    All nameserver names are under one TLD, so a problem with that TLD also makes the nameservers unreachable. Some operators use names under two TLDs for extra resilience.
    #12
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.airport-nuernberg.de 217.160.80.161NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1.airport-nuernberg.de 2001:8d8:fe:53:217:160:80:161NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns2.airport-nuernberg.de 217.160.81.161NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns2.airport-nuernberg.de 2001:8d8:fe:53:217:160:81:161NOERROR, 13 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns3.airport-nuernberg.de 185.132.35.161NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns3.airport-nuernberg.de 2607:f1c0:fe:53:185:132:35:161NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns4.airport-nuernberg.de 185.132.34.161NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns4.airport-nuernberg.de 2607:f1c0:fe:53:185:132:34:161NOERROR, 7 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/

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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ns1.airport-nuernberg.de: "Served by PowerDNS - https://www.powerdns.com/"; ns2.airport-nuernberg.de: "Served by PowerDNS - https://www.powerdns.com/"; ns3.airport-nuernberg.de: "Served by PowerDNS - https://www.powerdns.com/"; ns4.airport-nuernberg.de: "Served by PowerDNS - https://www.powerdns.com/".
    #17
  • ✓ 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 2025090204 · primary ns1.airport-nuernberg.de

Found

Primary (MNAME)
ns1.airport-nuernberg.de
Contact (RNAME)
domainadmin.airport-nuernberg.de
Serial
2025090204
Refresh / retry
43200 s / 7200 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.airport-nuernberg.de (217.160.80.161)2025090204
ns1.airport-nuernberg.de (2001:8d8:fe:53:217:160:80:161)2025090204
ns2.airport-nuernberg.de (217.160.81.161)2025090204
ns2.airport-nuernberg.de (2001:8d8:fe:53:217:160:81:161)2025090204
ns3.airport-nuernberg.de (185.132.35.161)2025090204
ns3.airport-nuernberg.de (2607:f1c0:fe:53:185:132:35:161)2025090204
ns4.airport-nuernberg.de (185.132.34.161)2025090204
ns4.airport-nuernberg.de (2607:f1c0:fe:53:185:132:34:161)2025090204

Checks

  • ✓ Serial 2025090204 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 12h, retry 2h, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.airport-nuernberg.de is one of the listed nameservers.
  • ✓ Contact domainadmin@airport-nuernberg.de #25
    The SOA RNAME domainadmin.airport-nuernberg.de means domainadmin@airport-nuernberg.de.
  • ✓ Date-based serial #26
    The serial 2025090204 follows the YYYYMMDDnn convention (2025-09-02).

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

warn

17 records at the apex

Found

Read from
217.160.80.161:53
TypeValueTTL
SOAns1.airport-nuernberg.de. domainadmin.airport-nuernberg.de. 2025090204 43200 7200 1209600 8640086400
NSns4.airport-nuernberg.de.86400
NSns3.airport-nuernberg.de.86400
NSns2.airport-nuernberg.de.86400
NSns1.airport-nuernberg.de.86400
A3.33.223.25260
A15.197.240.12260
A62.116.130.860
AAAA2600:9000:a61a:427f:8aa6:d9d8:5006:fd7860
AAAA2600:9000:a707:c126:d07a:5057:9c75:35c960
MX5 de-smtp-inbound-2.mimecast.com.60
MX5 de-smtp-inbound-1.mimecast.com.60
TXT"v=spf1 ip4:62.128.1.0/24 ip4:213.95.71.0/24 ip4:213.95.72.0/22 ip4:213.95.33.60 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com include:_spf.psm.knowbe4.com include:de._netblocks.mimecast.com -all"3600
TXT"QuoVadis=7ad6065d-13a8-47a9-9447-3fdc1c287203"3600
TXT"MS=ms70471576"3600
TXT"apple-domain-verification=KMjCoNa3Di9FCkFR"3600
TXT"swisssign-check=ndySnnWhJfqXj7DaSst9o--toQM"3600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m), AAAA (1m), MX (1m). Low TTLs are useful just before a planned change.
    #32
  • ✓ 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