seidels-mineralienwelt.de

Checked 22 October 2026, 00:10 UTC · via 8.8.8.8
!Passed with warnings
20 passed 1 warning 0 failed 8 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.domainoffensive.de, ns2.domainoffensive.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.domainoffensive.de, ns2.domainoffensive.de
NS in the zone
ns1.domainoffensive.de, ns2.domainoffensive.de
NameserverAddressesNetwork (AS)Glue
ns1.domainoffensive.de192.174.68.21 2001:67c:1bc::21AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT-
ns2.domainoffensive.de176.97.158.21 2001:67c:10b8::21AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.domainoffensive.de, ns2.domainoffensive.de.
    #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 (AS1921 (RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT): 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 .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

info

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.domainoffensive.de 192.174.68.21NOERROR, 3 ms, authoritativenoyes / yesrefusedRcodeZero DNS
ns1.domainoffensive.de 2001:67c:1bc::21NOERROR, 7 ms, authoritativenoyes / yesrefusedRcodeZero DNS
ns2.domainoffensive.de 176.97.158.21NOERROR, 12 ms, authoritativenoyes / yesrefusedreg-wie1
ns2.domainoffensive.de 2001:67c:10b8::21NOERROR, 14 ms, authoritativenoyes / yesrefusedreg-wie1

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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ns1.domainoffensive.de: "RcodeZero DNS"; ns2.domainoffensive.de: "reg-wie1".
    #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 1695882608 · primary ns1.domainoffensive.de

Found

Primary (MNAME)
ns1.domainoffensive.de
Contact (RNAME)
info.domains.resellerinterface.de
Serial
1695882608
Refresh / retry
10800 s / 3600 s
Expire
604800 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
ns1.domainoffensive.de (192.174.68.21)1695882608
ns1.domainoffensive.de (2001:67c:1bc::21)1695882608
ns2.domainoffensive.de (176.97.158.21)1695882608
ns2.domainoffensive.de (2001:67c:10b8::21)1695882608

Checks

  • ✓ Serial 1695882608 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 7d, negative TTL 15m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.domainoffensive.de is one of the listed nameservers.
  • ✓ Contact info@domains.resellerinterface.de #25
    The SOA RNAME info.domains.resellerinterface.de means info@domains.resellerinterface.de.
  • ✓ Timestamp serial #26
    The serial 1695882608 is a Unix timestamp (2023-09-28 06:30 UTC).

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
192.174.68.21:53
TypeValueTTL
SOAns1.domainoffensive.de. info.domains.resellerinterface.de. 1695882608 10800 3600 604800 90086400
NSns1.domainoffensive.de.86400
NSns2.domainoffensive.de.86400
A213.136.64.783600
MX10 mail.teration.net.900

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, MX 15m, NS 1d.
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • i
    Wildcard record
    A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.
    #34
  • 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