darmstadt.de

Checked 21 October 2026, 22:11 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

info

ns0.darmstadt.de, ns1.darmstadt.de, ns2.darmstadt.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns0.darmstadt.de, ns1.darmstadt.de, ns2.darmstadt.de
NS in the zone
ns0.darmstadt.de, ns1.darmstadt.de, ns2.darmstadt.de
NameserverAddressesNetwork (AS)Glue
ns0.darmstadt.de92.205.106.123 2a00:1169:110:bd80::AS21499 GODADDY-SXB - Host Europe GmbH, DE AS21499 GODADDY-SXB - Host Europe GmbH, DE92.205.106.123 2a00:1169:110:bd80::
ns1.darmstadt.de159.69.163.48 2a01:4f8:c0:2f18::2AS24940 HETZNER-AS - Hetzner Online GmbH, DE AS24940 HETZNER-AS - Hetzner Online GmbH, DE159.69.163.48 2a01:4f8:c0:2f18::2
ns2.darmstadt.de162.55.20.239 2a01:4f8:2190:2405::2AS24940 HETZNER-AS - Hetzner Online GmbH, DE AS24940 HETZNER-AS - Hetzner Online GmbH, DE162.55.20.239 2a01:4f8:2190:2405::2

Checks

  • ✓ 3 nameservers #6
    Delegated to ns0.darmstadt.de, ns1.darmstadt.de, ns2.darmstadt.de.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ Glue present and correct #8
    Glue is published for the nameservers inside the zone: ns0.darmstadt.de, ns1.darmstadt.de, ns2.darmstadt.de.
  • ✓ 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 3 IPv4 /24s and 3 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS21499 (GODADDY-SXB - Host Europe GmbH, DE): 2 addresses; AS24940 (HETZNER-AS - Hetzner Online GmbH, 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

warn

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns0.darmstadt.de 92.205.106.123NOERROR, 8 ms, authoritativenoyes / yesrefused-
ns0.darmstadt.de 2a00:1169:110:bd80::NOERROR, 8 ms, authoritativenoyes / yesrefused-
ns1.darmstadt.de 159.69.163.48NOERROR, 0 ms, authoritativenoyes / yesrefused9.18.49-1~deb12u2-Debian
ns1.darmstadt.de 2a01:4f8:c0:2f18::2NOERROR, 1 ms, authoritativenoyes / yesrefused9.18.49-1~deb12u2-Debian
ns2.darmstadt.de 162.55.20.239NOERROR, 2 ms, authoritativenoyes / yesrefused9.20.29-1~deb13u1-Debian
ns2.darmstadt.de 2a01:4f8:2190:2405::2NOERROR, 3 ms, authoritativenoyes / yesrefused9.20.29-1~deb13u1-Debian

Checks

  • ✓ All respond #14
    All 6 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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns1.darmstadt.de: "9.18.49-1~deb12u2-Debian"; ns2.darmstadt.de: "9.20.29-1~deb13u1-Debian". Hide or replace the version string.
    #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 2026092400 · primary ns1.darmstadt.de

Found

Primary (MNAME)
ns1.darmstadt.de
Contact (RNAME)
hostmaster.darmstadt.de
Serial
2026092400
Refresh / retry
10800 s / 3600 s
Expire
604800 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns0.darmstadt.de (92.205.106.123)2026092400
ns0.darmstadt.de (2a00:1169:110:bd80::)2026092400
ns1.darmstadt.de (159.69.163.48)2026092400
ns1.darmstadt.de (2a01:4f8:c0:2f18::2)2026092400
ns2.darmstadt.de (162.55.20.239)2026092400
ns2.darmstadt.de (2a01:4f8:2190:2405::2)2026092400

Checks

  • ✓ Serial 2026092400 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 7d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.darmstadt.de is one of the listed nameservers.
  • ✓ Contact hostmaster@darmstadt.de #25
    The SOA RNAME hostmaster.darmstadt.de means hostmaster@darmstadt.de.
  • ✓ Date-based serial #26
    The serial 2026092400 follows the YYYYMMDDnn convention (2026-09-24).

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
92.205.106.123:53
TypeValueTTL
SOAns1.darmstadt.de. hostmaster.darmstadt.de. 2026092400 10800 3600 604800 36007200
NSns0.darmstadt.de.7200
NSns1.darmstadt.de.7200
NSns2.darmstadt.de.7200
A85.10.253.173600
AAAA2a01:4f8:c0:2f18:550a:fd11:0:23600
MX150 mail3.darmstadt.de.7200
MX100 mail.darmstadt.de.7200
TXT"swisssign-check=OmkFUhwKNZS1QRWb2Zej_KIEUTM"7200
TXT"apple-domain-verification=G04Xvz3axoeeLwsQ"7200
TXT"cisco-ci-domain-verification=50d33c9340bb54bff1c88228efb43146461d03c79dfde09d2ad38c70f523d20"7200
TXT"v=spf1 a ip4:194.127.205.0/24 ip4:85.10.253.16/29 ip6:2a01:4f8:c0:2f18::/64 ip4:159.69.163.48 ip4:95.131.102.246 ip4:185.194.65.226 include:_spf0.darmstadt.de include:spf.protection.outlook.com ~all"7200
TXT"MS=5C0C3C068AB093C533AC55BB21F13678EB4C5C34"7200
TXT"google-site-verification=74kiBeyhsn8UQMUYg4ApbZ0gpeZTaKBbR4bTTMa5H00"7200

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, AAAA 1h, MX 2h, NS 2h. The NS TTL at the parent is 1d and in the zone 2h; 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