dr4w.de

Checked 21 October 2026, 22:15 UTC · via 8.8.8.8
!Passed with warnings
22 passed 3 warnings 0 failed 4 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.tmt.de, ns2.tmt.de, ns3.tmt.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.tmt.de, ns2.tmt.de, ns3.tmt.de
NS in the zone
ns1.tmt.de, ns2.tmt.de, ns3.tmt.de
NameserverAddressesNetwork (AS)Glue
ns1.tmt.de145.239.31.235 2001:41d0:601:2000::1bccAS16276 OVH - OVH SAS, FR AS16276 OVH - OVH SAS, FR145.239.31.235
ns2.tmt.de188.166.102.15 2a03:b0c0:2:d0::d12:e001AS14061 DIGITALOCEAN-ASN - DigitalOcean, LLC, US AS14061 DIGITALOCEAN-ASN - DigitalOcean, LLC, US188.166.102.15 2a03:b0c0:2:d0::d12:e001
ns3.tmt.de95.216.148.1 2a01:4f9:c010:c0f::1AS24940 HETZNER-AS - Hetzner Online GmbH, DE AS24940 HETZNER-AS - Hetzner Online GmbH, DE95.216.148.1 2a01:4f9:c010:c0f::1

Checks

  • ✓ 3 nameservers #6
    Delegated to ns1.tmt.de, ns2.tmt.de, ns3.tmt.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.tmt.de (glue 145.239.31.235, zone 145.239.31.235, 2001:41d0:601:2000::1bcc). 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 3 IPv4 /24s and 3 IPv6 /48s.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS14061 (DIGITALOCEAN-ASN - DigitalOcean, LLC, US): 2 addresses; AS16276 (OVH - OVH SAS, FR): 2 addresses; AS24940 (HETZNER-AS - Hetzner Online GmbH, DE): 2 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

warn

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.tmt.de 145.239.31.235NOERROR, 22 ms, authoritativenoyes / yesrefused9.18.49-1~deb12u2-Debian
ns1.tmt.de 2001:41d0:601:2000::1bccNOERROR, 23 ms, authoritativenoyes / yesrefused9.18.49-1~deb12u2-Debian
ns2.tmt.de 188.166.102.15NOERROR, 12 ms, authoritativenoyes / yesrefused9.18.49-1~deb12u2-Debian
ns2.tmt.de 2a03:b0c0:2:d0::d12:e001NOERROR, 16 ms, authoritativenoyes / yesrefused9.18.49-1~deb12u2-Debian
ns3.tmt.de 95.216.148.1NOERROR, 25 ms, authoritativenoyes / yesrefused9.18.49-1~deb12u2-Debian
ns3.tmt.de 2a01:4f9:c010:c0f::1NOERROR, 25 ms, authoritativenoyes / yesrefused9.18.49-1~deb12u2-Debian

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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns1.tmt.de: "9.18.49-1~deb12u2-Debian"; ns2.tmt.de: "9.18.49-1~deb12u2-Debian"; ns3.tmt.de: "9.18.49-1~deb12u2-Debian". 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 2022021809 · primary ns1.tmt.de

Found

Primary (MNAME)
ns1.tmt.de
Contact (RNAME)
hostmaster.ns1.tmt.de
Serial
2022021809
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.tmt.de (145.239.31.235)2022021809
ns1.tmt.de (2001:41d0:601:2000::1bcc)2022021809
ns2.tmt.de (188.166.102.15)2022021809
ns2.tmt.de (2a03:b0c0:2:d0::d12:e001)2022021809
ns3.tmt.de (95.216.148.1)2022021809
ns3.tmt.de (2a01:4f9:c010:c0f::1)2022021809

Checks

  • ✓ Serial 2022021809 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 ns1.tmt.de is one of the listed nameservers.
  • ✓ Contact hostmaster@ns1.tmt.de #25
    The SOA RNAME hostmaster.ns1.tmt.de means hostmaster@ns1.tmt.de.
  • ✓ Date-based serial #26
    The serial 2022021809 follows the YYYYMMDDnn convention (2022-02-18).

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

5 records at the apex

Found

Read from
145.239.31.235:53
TypeValueTTL
SOAns1.tmt.de. hostmaster.ns1.tmt.de. 2022021809 28800 7200 604800 8640086400
NSns3.tmt.de.86400
NSns2.tmt.de.86400
NSns1.tmt.de.86400
MX10 mx.tmt.de.86400

Checks

  • ✓ TTLs within range #32
    TTLs: MX 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