firmenwissen.de

Checked 21 October 2026, 22:30 UTC · via 8.8.8.8
!Passed with warnings
23 passed 2 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

ns.mpexnet.de, ns2.mpexnet.de, ns3.mpex.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns.mpexnet.de, ns2.mpexnet.de, ns3.mpex.net
NS in the zone
ns.mpexnet.de, ns2.mpexnet.de, ns3.mpex.net
NameserverAddressesNetwork (AS)Glue
ns.mpexnet.de81.17.212.141AS35833 MPEXNET - mpex GmbH, DE81.17.212.141
ns2.mpexnet.de178.32.0.58AS16276 OVH - OVH SAS, FR178.32.0.58
ns3.mpex.net138.201.4.88AS24940 HETZNER-AS - Hetzner Online GmbH, DE-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns.mpexnet.de, ns2.mpexnet.de, ns3.mpex.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 0 IPv6 /48s.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS16276 (OVH - OVH SAS, FR): 1 address; AS24940 (HETZNER-AS - Hetzner Online GmbH, DE): 1 address; AS35833 (MPEXNET - mpex GmbH, DE): 1 address.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .de, .net.
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

info

3 of 3 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns.mpexnet.de 81.17.212.141NOERROR, 10 ms, authoritativenoyes / yesrefusedSorry, no version display!
ns2.mpexnet.de 178.32.0.58NOERROR, 15 ms, authoritativenoyes / yesrefusedSorry, no version display!
ns3.mpex.net 138.201.4.88NOERROR, 4 ms, authoritativenoyes / yesrefusedSorry, no version display!

Checks

  • ✓ All respond #14
    All 3 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: ns.mpexnet.de: "Sorry, no version display!"; ns2.mpexnet.de: "Sorry, no version display!"; ns3.mpex.net: "Sorry, no version display!".
    #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 2026100102 · primary ns.mpexnet.de

Found

Primary (MNAME)
ns.mpexnet.de
Contact (RNAME)
hostmaster.mpexnet.de
Serial
2026100102
Refresh / retry
86400 s / 7200 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
ns.mpexnet.de (81.17.212.141)2026100102
ns2.mpexnet.de (178.32.0.58)2026100102
ns3.mpex.net (138.201.4.88)2026100102

Checks

  • ✓ Serial 2026100102 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1d, retry 2h, expire 7d, negative TTL 30m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns.mpexnet.de is one of the listed nameservers.
  • ✓ Contact hostmaster@mpexnet.de #25
    The SOA RNAME hostmaster.mpexnet.de means hostmaster@mpexnet.de.
  • ✓ Date-based serial #26
    The serial 2026100102 follows the YYYYMMDDnn convention (2026-10-01).

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

8 records at the apex

Found

Read from
81.17.212.141:53
TypeValueTTL
SOAns.mpexnet.de. hostmaster.mpexnet.de. 2026100102 86400 7200 604800 180043200
NSns2.mpexnet.de.43200
NSns3.mpex.net.43200
NSns.mpexnet.de.43200
A81.17.218.8143200
MX10 smtp.google.com.43200
TXT"google-site-verification=r_OnG-V3gjvWOAA1_TVModkvFMfnRiNxTEaht8CQq_Q"43200
TXT"mfs1c6cl0a6ere64sf5d0g35i6"43200

Checks

  • ✓ TTLs within range #32
    TTLs: A 12h, MX 12h, NS 12h. The NS TTL at the parent is 1d and in the zone 12h; 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