otv.de

Checked 21 October 2026, 23:42 UTC · via 8.8.8.8
✗Problems found
20 passed 2 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.hofmeirmedia.net, ns2.hofmeirmedia.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.hofmeirmedia.net, ns2.hofmeirmedia.net
NS in the zone
ns1.hofmeirmedia.net, ns2.hofmeirmedia.net
NameserverAddressesNetwork (AS)Glue
ns1.hofmeirmedia.net178.248.241.21 2a02:1308:a000::53:53AS196922 HOFMEIR-AS - Hofmeir Media GmbH, DE AS196922 HOFMEIR-AS - Hofmeir Media GmbH, DE-
ns2.hofmeirmedia.net178.248.240.75 2a02:1308:2224:cafd::53:53AS196922 HOFMEIR-AS - Hofmeir Media GmbH, DE AS196922 HOFMEIR-AS - Hofmeir Media GmbH, DE-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.hofmeirmedia.net, ns2.hofmeirmedia.net.
    #6
  • ✓ 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 2 IPv4 /24s and 2 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS196922 (HOFMEIR-AS - Hofmeir Media GmbH, DE): 4 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • i
    All nameserver names under .net
    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

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.hofmeirmedia.net 178.248.241.21NOERROR, 10 ms, authoritativenono / yesrefused-
ns1.hofmeirmedia.net 2a02:1308:a000::53:53NOERROR, 15 ms, authoritativenono / yesrefused-
ns2.hofmeirmedia.net 178.248.240.75NOERROR, 13 ms, authoritativenono / yesrefused-
ns2.hofmeirmedia.net 2a02:1308:2224:cafd::53:53NOERROR, 18 ms, authoritativenono / yesrefused-

Checks

  • ✓ All respond #14
    All 4 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.
  • ✓ No version disclosed #17
    The nameservers don't reveal their software version.
  • ✓ 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.hofmeirmedia.net (178.248.241.21): EOF; ns1.hofmeirmedia.net (2a02:1308:a000::53:53): EOF; ns2.hofmeirmedia.net (178.248.240.75): EOF; ns2.hofmeirmedia.net (2a02:1308:2224:cafd::53:53): EOF.
    #19
  • ✓ EDNS supported #20
    All nameservers support EDNS(0).
  • ✓ Public addresses #21
    All nameserver addresses are publicly routable.

SOA

pass

serial 5 · primary ns1.hofmeirmedia.net

Found

Primary (MNAME)
ns1.hofmeirmedia.net
Contact (RNAME)
hostmaster.ns1.hofmeirmedia.net
Serial
5
Refresh / retry
10800 s / 3600 s
Expire
604800 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns1.hofmeirmedia.net (178.248.241.21)5
ns1.hofmeirmedia.net (2a02:1308:a000::53:53)5
ns2.hofmeirmedia.net (178.248.240.75)5
ns2.hofmeirmedia.net (2a02:1308:2224:cafd::53:53)5

Checks

  • ✓ Serial 5 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 7d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.hofmeirmedia.net is one of the listed nameservers.
  • ✓ Contact hostmaster@ns1.hofmeirmedia.net #25
    The SOA RNAME hostmaster.ns1.hofmeirmedia.net means hostmaster@ns1.hofmeirmedia.net.
  • ✓ Counter serial #26
    The serial 5 is a plain counter.

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

warn

10 records at the apex

Found

Read from
178.248.241.21:53
TypeValueTTL
SOAns1.hofmeirmedia.net. hostmaster.ns1.hofmeirmedia.net. 5 10800 3600 604800 3600300
NSns2.hofmeirmedia.net.300
NSns1.hofmeirmedia.net.300
A116.203.228.9499
MX10 mx-01-eu-central-1.prod.hydra.sophos.com.300
MX20 mx-02-eu-central-1.prod.hydra.sophos.com.300
TXT"sophos-domain-verification=246d6c476f7a4044f68275ea82a49050f406b3ae9207d48bd778a139c9609c14"300
TXT"sophos-domain-verification=a446a8c06713567d321e1f508fc64d707d36306a"300
TXT"v=spf1 mx include:spf.protection.outlook.com include:spf.brevo.com include:_spf_eucentral1.prod.hydra.sophos.com include:ispgateway.de -all"300
TXT"facebook-domain-verification=5az2rinqijgnh19h7qvxf4ybj22q1n"300

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m39s). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1d and in the zone 5m; resolvers may use either.
    #32
  • ✓ 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