kvno.de

Checked 21 October 2026, 23:11 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

ns8.colt.net, pns.dtag.de, secondary004.dtag.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns8.colt.net, pns.dtag.de, secondary004.dtag.net
NS in the zone
ns8.colt.net, pns.dtag.de, secondary004.dtag.net
NameserverAddressesNetwork (AS)Glue
ns8.colt.net84.14.241.53AS8220 COLT - COLT Technology Services Group Limited, GB-
pns.dtag.de194.25.0.125 2003:40:8000::100AS3320 DTAG - Deutsche Telekom AG, DE AS3320 DTAG - Deutsche Telekom AG, DE194.25.0.125 2003:40:8000::100
secondary004.dtag.net195.244.245.27 2a00:fa8:3:0:100:0:4:1AS5605 NETUSE - NetUSE AG, DE AS5605 NETUSE - NetUSE AG, DE-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns8.colt.net, pns.dtag.de, secondary004.dtag.net.
  • ✓ 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 3 IPv4 /24s and 2 IPv6 /48s.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS3320 (DTAG - Deutsche Telekom AG, DE): 2 addresses; AS5605 (NETUSE - NetUSE AG, DE): 2 addresses; AS8220 (COLT - COLT Technology Services Group Limited, GB): 1 address.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .de, .net.
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns8.colt.net.
    #13

Nameservers

info

5 of 5 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns8.colt.net 84.14.241.53NOERROR, 12 ms, authoritativenoyes / yesrefusedColt
pns.dtag.de 194.25.0.125NOERROR, 10 ms, authoritativenoyes / yesrefusedDomainNameServer
pns.dtag.de 2003:40:8000::100NOERROR, 7 ms, authoritativenoyes / yesrefusedDomainNameServer
secondary004.dtag.net 195.244.245.27NOERROR, 12 ms, authoritativenoyes / yesrefusedDomainNameServer
secondary004.dtag.net 2a00:fa8:3:0:100:0:4:1NOERROR, 17 ms, authoritativenoyes / yesrefusedDomainNameServer

Checks

  • ✓ All respond #14
    All 5 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: ns8.colt.net: "Colt"; pns.dtag.de: "DomainNameServer"; secondary004.dtag.net: "DomainNameServer".
    #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 2026092102 · primary pns.dtag.de

Found

Primary (MNAME)
pns.dtag.de
Contact (RNAME)
hostmaster.kvno.de
Serial
2026092102
Refresh / retry
14400 s / 1800 s
Expire
1209600 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns8.colt.net (84.14.241.53)2026092102
pns.dtag.de (194.25.0.125)2026092102
pns.dtag.de (2003:40:8000::100)2026092102
secondary004.dtag.net (195.244.245.27)2026092102
secondary004.dtag.net (2a00:fa8:3:0:100:0:4:1)2026092102

Checks

  • ✓ Serial 2026092102 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 4h, retry 30m, expire 14d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver pns.dtag.de is one of the listed nameservers.
  • ✓ Contact hostmaster@kvno.de #25
    The SOA RNAME hostmaster.kvno.de means hostmaster@kvno.de.
  • ✓ Date-based serial #26
    The serial 2026092102 follows the YYYYMMDDnn convention (2026-09-21).

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
84.14.241.53:53
TypeValueTTL
SOApns.dtag.de. hostmaster.kvno.de. 2026092102 14400 1800 1209600 360086400
NSns8.colt.net.345600
NSpns.dtag.de.345600
NSsecondary004.dtag.net.345600
A136.243.160.9300
MX50 s38hub30.kvno.de.86400
MX10 s38mx02.kvno.de.86400
MX20 s38mx01.kvno.de.86400
TXT"cisco-ci-domain-verification=651a65d8e140b64a26dc78767386775905fedd7fc09191dcba3945bd55cb1510"86400
TXT"_telesec-domain-validation=361871_2026-08-05_QdvlwgNKuWKgDcUigTUO7bkkBoQ8jUb2kqorxLQTrK6N4QKiv4"86400
TXT"MS=ms72037738"86400
TXT"v=spf1 mx -all"86400
TXT"apple-domain-verification=ZmUG36zz5b61STpF"86400
TXT"miro-verification=09e942cc44f94b3214b93c743d16ca121ac9f561"86400

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 1d, NS 4d. The NS TTL at the parent is 1d and in the zone 4d; 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