germany-tourism.de

Checked 21 October 2026, 22:40 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

ns1.de.colt.net, ns8.colt.net, s-dns01.d-z-t.com, s-dns02.d-z-t.com

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.de.colt.net, ns8.colt.net, s-dns01.d-z-t.com, s-dns02.d-z-t.com
NS in the zone
ns1.de.colt.net, ns8.colt.net, s-dns01.d-z-t.com, s-dns02.d-z-t.com
NameserverAddressesNetwork (AS)Glue
ns1.de.colt.net212.74.77.55AS8220 COLT - COLT Technology Services Group Limited, GB-
ns8.colt.net84.14.241.53AS8220 COLT - COLT Technology Services Group Limited, GB-
s-dns01.d-z-t.com185.78.40.136 2a03:57e0:d:0:185:78:40:136AS60481 GNTB - Deutsche Zentrale fur Tourismus e.V. DZT, DE AS60481 GNTB - Deutsche Zentrale fur Tourismus e.V. DZT, DE-
s-dns02.d-z-t.com92.205.183.89 2a00:1169:110:6300::AS21499 GODADDY-SXB - Host Europe GmbH, DE AS21499 GODADDY-SXB - Host Europe GmbH, DE-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1.de.colt.net, ns8.colt.net, s-dns01.d-z-t.com, s-dns02.d-z-t.com.
  • ✓ 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.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS21499 (GODADDY-SXB - Host Europe GmbH, DE): 2 addresses; AS60481 (GNTB - Deutsche Zentrale fur Tourismus e.V. DZT, DE): 2 addresses; AS8220 (COLT - COLT Technology Services Group Limited, GB): 2 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .com, .net.
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns1.de.colt.net, ns8.colt.net.
    #13

Nameservers

info

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.de.colt.net 212.74.77.55NOERROR, 16 ms, authoritativenoyes / yesrefusedColt
ns8.colt.net 84.14.241.53NOERROR, 12 ms, authoritativenoyes / yesrefusedColt
s-dns01.d-z-t.com 185.78.40.136NOERROR, 5 ms, authoritativenoyes / yesrefusedunknown
s-dns01.d-z-t.com 2a03:57e0:d:0:185:78:40:136NOERROR, 5 ms, authoritativenoyes / yesrefusedunknown
s-dns02.d-z-t.com 92.205.183.89NOERROR, 7 ms, authoritativenoyes / yesrefused-
s-dns02.d-z-t.com 2a00:1169:110:6300::NOERROR, 8 ms, authoritativenoyes / yesrefused-

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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ns1.de.colt.net: "Colt"; ns8.colt.net: "Colt"; s-dns01.d-z-t.com: "unknown".
    #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 2026071003 · primary s-dns01.d-z-t.com

Found

Primary (MNAME)
s-dns01.d-z-t.com
Contact (RNAME)
itservice.d-z-t.com
Serial
2026071003
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.de.colt.net (212.74.77.55)2026071003
ns8.colt.net (84.14.241.53)2026071003
s-dns01.d-z-t.com (185.78.40.136)2026071003
s-dns01.d-z-t.com (2a03:57e0:d:0:185:78:40:136)2026071003
s-dns02.d-z-t.com (92.205.183.89)2026071003
s-dns02.d-z-t.com (2a00:1169:110:6300::)2026071003

Checks

  • ✓ Serial 2026071003 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 7d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver s-dns01.d-z-t.com is one of the listed nameservers.
  • ✓ Contact itservice@d-z-t.com #25
    The SOA RNAME itservice.d-z-t.com means itservice@d-z-t.com.
  • ✓ Date-based serial #26
    The serial 2026071003 follows the YYYYMMDDnn convention (2026-07-10).

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

6 records at the apex

Found

Read from
212.74.77.55:53
TypeValueTTL
SOAs-dns01.d-z-t.com. itservice.d-z-t.com. 2026071003 28800 7200 604800 8640086400
NSns8.colt.net.86400
NSs-dns01.d-z-t.com.86400
NSs-dns02.d-z-t.com.86400
NSns1.de.colt.net.86400
A3.73.180.4786400

Checks

  • ✓ TTLs within range #32
    TTLs: A 1d, 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