domain.de

Checked 21 October 2026, 22:14 UTC · via 8.8.8.8
!Passed with warnings
23 passed 1 warning 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

info

ns15.domserver.de, ns16.domserver.de, ns17.domserver.de, ns18.domserver.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns15.domserver.de, ns16.domserver.de, ns17.domserver.de, ns18.domserver.de
NS in the zone
ns15.domserver.de, ns16.domserver.de, ns17.domserver.de, ns18.domserver.de
NameserverAddressesNetwork (AS)Glue
ns15.domserver.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
ns16.domserver.de217.160.81.161 2001:8d8:fe:53:217:160:81:161AS8560 IONOS-AS - IONOS SE, DE AS8560 IONOS-AS - IONOS SE, DE217.160.81.161 2001:8d8:fe:53:217:160:81:161
ns17.domserver.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
ns18.domserver.de185.132.34.161 2607:f1c0:fe:53:185:132:34:161AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB185.132.34.161 2607:f1c0:fe:53:185:132:34:161

Checks

  • ✓ 4 nameservers #6
    Delegated to ns15.domserver.de, ns16.domserver.de, ns17.domserver.de, ns18.domserver.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 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
ns15.domserver.de 217.160.80.161NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns15.domserver.de 2001:8d8:fe:53:217:160:80:161NOERROR, 10 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns16.domserver.de 217.160.81.161NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns16.domserver.de 2001:8d8:fe:53:217:160:81:161NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns17.domserver.de 185.132.35.161NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns17.domserver.de 2607:f1c0:fe:53:185:132:35:161NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns18.domserver.de 185.132.34.161NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns18.domserver.de 2607:f1c0:fe:53:185:132:34:161NOERROR, 4 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: ns15.domserver.de: "Served by PowerDNS - https://www.powerdns.com/"; ns16.domserver.de: "Served by PowerDNS - https://www.powerdns.com/"; ns17.domserver.de: "Served by PowerDNS - https://www.powerdns.com/"; ns18.domserver.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 2025073004 · primary ns15.domserver.de

Found

Primary (MNAME)
ns15.domserver.de
Contact (RNAME)
oo.gerwan.de
Serial
2025073004
Refresh / retry
39940 s / 7200 s
Expire
604800 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns15.domserver.de (217.160.80.161)2025073004
ns15.domserver.de (2001:8d8:fe:53:217:160:80:161)2025073004
ns16.domserver.de (217.160.81.161)2025073004
ns16.domserver.de (2001:8d8:fe:53:217:160:81:161)2025073004
ns17.domserver.de (185.132.35.161)2025073004
ns17.domserver.de (2607:f1c0:fe:53:185:132:35:161)2025073004
ns18.domserver.de (185.132.34.161)2025073004
ns18.domserver.de (2607:f1c0:fe:53:185:132:34:161)2025073004

Checks

  • ✓ Serial 2025073004 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 11h5m40s, retry 2h, expire 7d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns15.domserver.de is one of the listed nameservers.
  • ✓ Contact oo@gerwan.de #25
    The SOA RNAME oo.gerwan.de means oo@gerwan.de.
  • ✓ Date-based serial #26
    The serial 2025073004 follows the YYYYMMDDnn convention (2025-07-30).

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

9 records at the apex

Found

Read from
217.160.80.161:53
TypeValueTTL
SOAns15.domserver.de. oo.gerwan.de. 2025073004 39940 7200 604800 300300
NSns16.domserver.de.300
NSns17.domserver.de.300
NSns15.domserver.de.300
NSns18.domserver.de.300
A91.220.34.121300
MX10 mail02.mail-gw.de.300
MX20 mail03.mail-gw.de.300
TXT"v=spf1 a mx ip4:95.130.17.226 ip4:91.220.34.8 ip6:2a02:2260:2:0:0:0:5bdc:2208 ~all"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 5m, NS 5m. The NS TTL at the parent is 1d and in the zone 5m; resolvers may use either.
  • ✓ 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