fotokoch.de

Checked 21 October 2026, 22:31 UTC · via 8.8.8.8
✗Problems found
19 passed 0 warnings 1 failed 6 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.namemaster.de, ns2.namemaster.de, ns3.namemaster.de, ns4.namemaster.de, ns5.namemaster.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.namemaster.de, ns2.namemaster.de, ns3.namemaster.de, ns4.namemaster.de, ns5.namemaster.de
NS in the zone
ns1.namemaster.de, ns2.namemaster.de, ns3.namemaster.de, ns4.namemaster.de, ns5.namemaster.de
NameserverAddressesNetwork (AS)Glue
ns1.namemaster.de81.209.154.158 2a05:8e40:5:3::9AS13237 LAMBDANET-AS - euNetworks GmbH, DE AS198710 UUU-TELECOM-AS - 3U TELECOM GmbH, DE-
ns2.namemaster.de54.36.91.231 2001:41d0:403:1955::1AS16276 OVH - OVH SAS, FR AS16276 OVH - OVH SAS, FR-
ns3.namemaster.de80.239.218.75 2a05:8e40:5:3::10AS1299 TWELVE99 - Arelion Sweden AB, SE AS198710 UUU-TELECOM-AS - 3U TELECOM GmbH, DE-
ns4.namemaster.de178.33.39.17 2001:41d0:403:1955::2AS16276 OVH - OVH SAS, FR AS16276 OVH - OVH SAS, FR-
ns5.namemaster.de81.209.155.2 2a05:8e40:5:3::11AS13237 LAMBDANET-AS - euNetworks GmbH, DE AS198710 UUU-TELECOM-AS - 3U TELECOM GmbH, DE-

Checks

  • ✓ 5 nameservers #6
    Delegated to ns1.namemaster.de, ns2.namemaster.de, ns3.namemaster.de, ns4.namemaster.de, ns5.namemaster.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 5 IPv4 /24s and 2 IPv6 /48s.
  • ✓ 4 autonomous systems #11
    The nameservers are spread over: AS1299 (TWELVE99 - Arelion Sweden AB, SE): 1 address; AS13237 (LAMBDANET-AS - euNetworks GmbH, DE): 2 addresses; AS16276 (OVH - OVH SAS, FR): 4 addresses; AS198710 (UUU-TELECOM-AS - 3U TELECOM GmbH, DE): 3 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

fail

10 of 10 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.namemaster.de 81.209.154.158NOERROR, 12 ms, authoritativenono / yesrefusedno info
ns1.namemaster.de 2a05:8e40:5:3::9NOERROR, 13 ms, authoritativenono / yesrefusedno info
ns2.namemaster.de 54.36.91.231NOERROR, 8 ms, authoritativenono / yesrefusedno info
ns2.namemaster.de 2001:41d0:403:1955::1NOERROR, 7 ms, authoritativenono / yesrefusedno info
ns3.namemaster.de 80.239.218.75NOERROR, 17 ms, authoritativenono / yesrefusedno info
ns3.namemaster.de 2a05:8e40:5:3::10NOERROR, 13 ms, authoritativenono / yesrefusedno info
ns4.namemaster.de 178.33.39.17NOERROR, 8 ms, authoritativenono / yesrefusedno info
ns4.namemaster.de 2001:41d0:403:1955::2NOERROR, 7 ms, authoritativenono / yesrefusedno info
ns5.namemaster.de 81.209.155.2NOERROR, 13 ms, authoritativenono / yesrefusedno info
ns5.namemaster.de 2a05:8e40:5:3::11NOERROR, 13 ms, authoritativenono / yesrefusedno info

Checks

  • ✓ All respond #14
    All 10 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.namemaster.de: "no info"; ns2.namemaster.de: "no info"; ns3.namemaster.de: "no info"; ns4.namemaster.de: "no info"; ns5.namemaster.de: "no info".
    #17
  • ✓ Zone transfers refused #18
    No nameserver allows a zone transfer to the public.
  • ✗
    No DNS over TCP
    DNS over TCP is required (RFC 7766); without it, large answers such as DNSSEC responses fail. Not answering over TCP: ns1.namemaster.de (81.209.154.158): dial tcp 81.209.154.158:53: i/o timeout; ns1.namemaster.de (2a05:8e40:5:3::9): dial tcp [2a05:8e40:5:3::9]:53: i/o timeout; ns2.namemaster.de (54.36.91.231): dial tcp 54.36.91.231:53: i/o timeout; ns2.namemaster.de (2001:41d0:403:1955::1): dial tcp [2001:41d0:403:1955::1]:53: i/o timeout; ns3.namemaster.de (80.239.218.75): dial tcp 80.239.218.75:53: i/o timeout; ns3.namemaster.de (2a05:8e40:5:3::10): dial tcp [2a05:8e40:5:3::10]:53: i/o timeout; ns4.namemaster.de (178.33.39.17): dial tcp 178.33.39.17:53: i/o timeout; ns4.namemaster.de (2001:41d0:403:1955::2): dial tcp [2001:41d0:403:1955::2]:53: i/o timeout; ns5.namemaster.de (81.209.155.2): dial tcp 81.209.155.2:53: i/o timeout; ns5.namemaster.de (2a05:8e40:5:3::11): dial tcp [2a05:8e40:5:3::11]:53: i/o timeout.
    #19
  • ✓ EDNS supported #20
    All nameservers support EDNS(0).
  • ✓ Public addresses #21
    All nameserver addresses are publicly routable.

SOA

pass

serial 2026102100 · primary ns1.namemaster.de

Found

Primary (MNAME)
ns1.namemaster.de
Contact (RNAME)
ns2.namemaster.de
Serial
2026102100
Refresh / retry
3600 s / 901 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.namemaster.de (81.209.154.158)2026102100
ns1.namemaster.de (2a05:8e40:5:3::9)2026102100
ns2.namemaster.de (54.36.91.231)2026102100
ns2.namemaster.de (2001:41d0:403:1955::1)2026102100
ns3.namemaster.de (80.239.218.75)2026102100
ns3.namemaster.de (2a05:8e40:5:3::10)2026102100
ns4.namemaster.de (178.33.39.17)2026102100
ns4.namemaster.de (2001:41d0:403:1955::2)2026102100
ns5.namemaster.de (81.209.155.2)2026102100
ns5.namemaster.de (2a05:8e40:5:3::11)2026102100

Checks

  • ✓ Serial 2026102100 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 15m1s, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.namemaster.de is one of the listed nameservers.
  • ✓ Contact ns2@namemaster.de #25
    The SOA RNAME ns2.namemaster.de means ns2@namemaster.de.
  • ✓ Date-based serial #26
    The serial 2026102100 follows the YYYYMMDDnn convention (2026-10-21).

DNSSEC

info

Not signed

Found

Validated by resolver
no
Lookup error: read udp 46.225.38.91:51901->81.209.154.158:53: i/o timeout

Checks

  • i
    Could not be checked
    The DNSSEC lookup failed, so this could not be checked: read udp 46.225.38.91:51901->81.209.154.158:53: i/o timeout
    #27

Records

info

read udp 46.225.38.91:37893->81.209.154.158:53: i/o timeout

Checks

  • i
    Could not be checked
    The apex records lookup failed, so this could not be checked: read udp 46.225.38.91:37893->81.209.154.158:53: i/o timeout
    #32