koelnerkarneval.de

Checked 21 October 2026, 23:10 UTC · via 8.8.8.8
!Passed with warnings
21 passed 3 warnings 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

warn

ns1.ganzgraph.de, nsb1.schlundtech.de, nsc1.schlundtech.de, nsd1.schlundtech.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.ganzgraph.de, nsb1.schlundtech.de, nsc1.schlundtech.de, nsd1.schlundtech.de
NS in the zone
ns1.ganzgraph.de, nsb1.schlundtech.de, nsc1.schlundtech.de, nsd1.schlundtech.de
NameserverAddressesNetwork (AS)Glue
ns1.ganzgraph.de136.243.1.245AS24940 HETZNER-AS - Hetzner Online GmbH, DE136.243.1.245 2a01:4f8:211:1b5b::
nsb1.schlundtech.de185.132.35.227 2607:f1c0:fe:53:185:132:35:227AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB-
nsc1.schlundtech.de217.160.80.227 2001:8d8:fe:53:217:160:80:227AS8560 IONOS-AS - IONOS SE, DE AS8560 IONOS-AS - IONOS SE, DE-
nsd1.schlundtech.de217.160.81.227 2001:8d8:fe:53:217:160:81:227AS8560 IONOS-AS - IONOS SE, DE AS8560 IONOS-AS - IONOS SE, DE-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1.ganzgraph.de, nsb1.schlundtech.de, nsc1.schlundtech.de, nsd1.schlundtech.de.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • !
    Glue differs from the zone
    The addresses at the parent (glue) differ from the addresses in the zone: ns1.ganzgraph.de (glue 136.243.1.245, 2a01:4f8:211:1b5b::, zone 136.243.1.245). Update the glue at your registrar.
    #8
  • ✓ 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: AS15418 (IONOS-ANYCAST - Fasthosts Internet Limited, GB): 2 addresses; AS24940 (HETZNER-AS - Hetzner Online GmbH, DE): 1 address; 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
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns1.ganzgraph.de.
    #13

Nameservers

warn

7 of 7 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.ganzgraph.de 136.243.1.245NOERROR, 3 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 5.1.4 (built Aug 10 2026 13:38:30 by root@bh-centos-8.dev.cpanel.net)
nsb1.schlundtech.de 185.132.35.227NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
nsb1.schlundtech.de 2607:f1c0:fe:53:185:132:35:227NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
nsc1.schlundtech.de 217.160.80.227NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
nsc1.schlundtech.de 2001:8d8:fe:53:217:160:80:227NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
nsd1.schlundtech.de 217.160.81.227NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
nsd1.schlundtech.de 2001:8d8:fe:53:217:160:81:227NOERROR, 10 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/

Checks

  • ✓ All respond #14
    All 7 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.ganzgraph.de: "PowerDNS Authoritative Server 5.1.4 (built Aug 10 2026 13:38:30 by root@bh-centos-8.dev.cpanel.net)". 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 2026100803 · primary ns1.ganzgraph.de

Found

Primary (MNAME)
ns1.ganzgraph.de
Contact (RNAME)
soa.ganzgraph.de
Serial
2026100803
Refresh / retry
3600 s / 1800 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.ganzgraph.de (136.243.1.245)2026100803
nsb1.schlundtech.de (185.132.35.227)2026100803
nsb1.schlundtech.de (2607:f1c0:fe:53:185:132:35:227)2026100803
nsc1.schlundtech.de (217.160.80.227)2026100803
nsc1.schlundtech.de (2001:8d8:fe:53:217:160:80:227)2026100803
nsd1.schlundtech.de (217.160.81.227)2026100803
nsd1.schlundtech.de (2001:8d8:fe:53:217:160:81:227)2026100803

Checks

  • ✓ Serial 2026100803 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 30m, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.ganzgraph.de is one of the listed nameservers.
  • ✓ Contact soa@ganzgraph.de #25
    The SOA RNAME soa.ganzgraph.de means soa@ganzgraph.de.
  • ✓ Date-based serial #26
    The serial 2026100803 follows the YYYYMMDDnn convention (2026-10-08).

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

10 records at the apex

Found

Read from
136.243.1.245:53
TypeValueTTL
SOAns1.ganzgraph.de. soa.ganzgraph.de. 2026100803 3600 1800 1209600 8640086400
NSnsb1.schlundtech.de.86400
NSns1.ganzgraph.de.86400
NSnsc1.schlundtech.de.86400
NSnsd1.schlundtech.de.86400
A136.243.1.2453600
AAAA2a01:4f8:211:1b5b::3600
MX0 koelnerkarneval-de.mail.protection.outlook.com.600
TXT"MS=ms29764426"3600
TXT"v=spf1 ip4:136.243.1.245 +a +mx +ip4:88.99.146.149 +ip4:188.40.158.150 +ip4:5.9.106.101 +include:spf.protection.outlook.com +include:spf.codepiraten.com ~all"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, AAAA 1h, MX 10m, 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