hotel.de

Checked 21 October 2026, 22:50 UTC · via 8.8.8.8
!Passed with warnings
23 passed 2 warnings 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

pass

1.dnsservers.de, 2.dns-servers.eu, 3.dnsservers.de, 4.dns-servers.eu

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
1.dnsservers.de, 2.dns-servers.eu, 3.dnsservers.de, 4.dns-servers.eu
NS in the zone
1.dnsservers.de, 2.dns-servers.eu, 3.dnsservers.de, 4.dns-servers.eu
NameserverAddressesNetwork (AS)Glue
1.dnsservers.de217.160.80.161 2001:8d8:fe:53:217:160:80:161AS8560 IONOS-AS - IONOS SE, DE AS8560 IONOS-AS - IONOS SE, DE217.160.80.161 2001:8d8:fe:53:217:160:80:161
2.dns-servers.eu217.160.81.161 2001:8d8:fe:53:217:160:81:161AS8560 IONOS-AS - IONOS SE, DE AS8560 IONOS-AS - IONOS SE, DE-
3.dnsservers.de185.132.35.161 2607:f1c0:fe:53:185:132:35:161AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB185.132.35.161 2607:f1c0:fe:53:185:132:35:161
4.dns-servers.eu185.132.34.161 2607:f1c0:fe:53:185:132:34:161AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB-

Checks

  • ✓ 4 nameservers #6
    Delegated to 1.dnsservers.de, 2.dns-servers.eu, 3.dnsservers.de, 4.dns-servers.eu.
  • ✓ 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 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.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .de, .eu.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
1.dnsservers.de 217.160.80.161NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
1.dnsservers.de 2001:8d8:fe:53:217:160:80:161NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
2.dns-servers.eu 217.160.81.161NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
2.dns-servers.eu 2001:8d8:fe:53:217:160:81:161NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
3.dnsservers.de 185.132.35.161NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
3.dnsservers.de 2607:f1c0:fe:53:185:132:35:161NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
4.dns-servers.eu 185.132.34.161NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
4.dns-servers.eu 2607:f1c0:fe:53:185:132:34:161NOERROR, 3 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: 1.dnsservers.de: "Served by PowerDNS - https://www.powerdns.com/"; 2.dns-servers.eu: "Served by PowerDNS - https://www.powerdns.com/"; 3.dnsservers.de: "Served by PowerDNS - https://www.powerdns.com/"; 4.dns-servers.eu: "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 2026062206 · primary 1.dnsservers.de

Found

Primary (MNAME)
1.dnsservers.de
Contact (RNAME)
guardian.dplusc.de
Serial
2026062206
Refresh / retry
43200 s / 7200 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
1.dnsservers.de (217.160.80.161)2026062206
1.dnsservers.de (2001:8d8:fe:53:217:160:80:161)2026062206
2.dns-servers.eu (217.160.81.161)2026062206
2.dns-servers.eu (2001:8d8:fe:53:217:160:81:161)2026062206
3.dnsservers.de (185.132.35.161)2026062206
3.dnsservers.de (2607:f1c0:fe:53:185:132:35:161)2026062206
4.dns-servers.eu (185.132.34.161)2026062206
4.dns-servers.eu (2607:f1c0:fe:53:185:132:34:161)2026062206

Checks

  • ✓ Serial 2026062206 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 1.dnsservers.de is one of the listed nameservers.
  • ✓ Contact guardian@dplusc.de #25
    The SOA RNAME guardian.dplusc.de means guardian@dplusc.de.
  • ✓ Date-based serial #26
    The serial 2026062206 follows the YYYYMMDDnn convention (2026-06-22).

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

15 records at the apex

Found

Read from
217.160.80.161:53
TypeValueTTL
SOA1.dnsservers.de. guardian.dplusc.de. 2026062206 43200 7200 1209600 8640086400
NS2.dns-servers.eu.86400
NS3.dnsservers.de.86400
NS1.dnsservers.de.86400
NS4.dns-servers.eu.86400
A23.45.102.938
AAAA2a02:26f0:3500:2ae::e3718
AAAA2a02:26f0:3500:2b4::e3718
MX10 mx02.nbg.linovate.de.7200
MX10 mx01.nbg.linovate.de.7200
TXT"MS=ms87944285"3600
TXT"BKtTL1K4qmFpIpDMiGDzNMjRffT6p/PDUGFKUfmqwkxu6dMO4FcoogjFJ4Z1CNkvUdK+oRBnN3QFN7pSoBw/Xg=="3600
TXT"google-site-verification=Of5vDlh2DYg4i9zVnjC3qeWDsCGcs0qQssp0TkuTpjw"3600
TXT"9dfosrcn4dqci9b2g9khg2l4en"3600
TXT"v=spf1 include:spf.messagelabs.com include:spf.protection.outlook.com ip4:194.153.190.201 ip4:194.153.190.203 ip4:194.153.190.226 ip4:194.153.190.227 -all"3600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (8s), AAAA (18s). 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