kulturstiftung.de

Checked 21 October 2026, 23:10 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.atndns.de, ns2.atndns.de, ns3.atndns.com, ns4.atndns.com

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.atndns.de, ns2.atndns.de, ns3.atndns.com, ns4.atndns.com
NS in the zone
ns1.atndns.de, ns2.atndns.de, ns3.atndns.com, ns4.atndns.com
NameserverAddressesNetwork (AS)Glue
ns1.atndns.de176.9.253.206AS24940 HETZNER-AS - Hetzner Online GmbH, DE176.9.253.206
ns2.atndns.de213.239.247.130AS24940 HETZNER-AS - Hetzner Online GmbH, DE213.239.247.130
ns3.atndns.com51.68.191.209 2001:41d0:701:1100::cc1AS16276 OVH - OVH SAS, FR AS16276 OVH - OVH SAS, FR-
ns4.atndns.com159.69.92.171 2a01:4f8:1c1c:61cd::1AS24940 HETZNER-AS - Hetzner Online GmbH, DE AS24940 HETZNER-AS - Hetzner Online GmbH, DE-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1.atndns.de, ns2.atndns.de, ns3.atndns.com, ns4.atndns.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.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS16276 (OVH - OVH SAS, FR): 2 addresses; AS24940 (HETZNER-AS - Hetzner Online GmbH, DE): 4 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .com, .de.
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns1.atndns.de, ns2.atndns.de.
    #13

Nameservers

info

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.atndns.de 176.9.253.206NOERROR, 3 ms, authoritativenoyes / yesrefusedunknown
ns2.atndns.de 213.239.247.130NOERROR, 3 ms, authoritativenoyes / yesrefusedunknown
ns3.atndns.com 51.68.191.209NOERROR, 5 ms, authoritativenoyes / yesrefusedunknown
ns3.atndns.com 2001:41d0:701:1100::cc1NOERROR, 5 ms, authoritativenoyes / yesrefusedunknown
ns4.atndns.com 159.69.92.171NOERROR, 3 ms, authoritativenoyes / yesrefusedunknown
ns4.atndns.com 2a01:4f8:1c1c:61cd::1NOERROR, 2 ms, authoritativenoyes / yesrefusedunknown

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.atndns.de: "unknown"; ns2.atndns.de: "unknown"; ns3.atndns.com: "unknown"; ns4.atndns.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 2026040901 · primary ns1.atndns.de

Found

Primary (MNAME)
ns1.atndns.de
Contact (RNAME)
atnd.atnd.de
Serial
2026040901
Refresh / retry
7200 s / 900 s
Expire
604800 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns1.atndns.de (176.9.253.206)2026040901
ns2.atndns.de (213.239.247.130)2026040901
ns3.atndns.com (51.68.191.209)2026040901
ns3.atndns.com (2001:41d0:701:1100::cc1)2026040901
ns4.atndns.com (159.69.92.171)2026040901
ns4.atndns.com (2a01:4f8:1c1c:61cd::1)2026040901

Checks

  • ✓ Serial 2026040901 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 15m, expire 7d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.atndns.de is one of the listed nameservers.
  • ✓ Contact atnd@atnd.de #25
    The SOA RNAME atnd.atnd.de means atnd@atnd.de.
  • ✓ Date-based serial #26
    The serial 2026040901 follows the YYYYMMDDnn convention (2026-04-09).

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

12 records at the apex

Found

Read from
176.9.253.206:53
TypeValueTTL
SOAns1.atndns.de. atnd.atnd.de. 2026040901 7200 900 604800 36003600
NSns4.atndns.com.7200
NSns2.atndns.de.7200
NSns1.atndns.de.7200
NSns3.atndns.com.7200
A3.66.50.1563600
AAAA2a05:d014:14f:aa14:553d:7422:89fe:86653600
MX20 mail3.atnd.net.3600
MX10 mail2.atnd.net.3600
TXT"cisco-ci-domain-verification=12751ff5bef6692838c6c6d736973af2a58c3d053da6b5ac99e3a671c05d3fae"3600
TXT"v=spf1 mx a ip4:80.153.54.135/32 include:spf.atnd.net include:spf.nl2go.com -all"3600
TXT"MS=0078AB93421152A585CA5E6D152C291FE7ED55E2"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, AAAA 1h, MX 1h, 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