offenburg.de

Checked 21 October 2026, 23:41 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

k1z01s003.kivbf.de, k1z01s004.kivbf.de, ns.frei.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
k1z01s003.kivbf.de, k1z01s004.kivbf.de, ns.frei.net
NS in the zone
k1z01s003.kivbf.de, k1z01s004.kivbf.de, ns.frei.net
NameserverAddressesNetwork (AS)Glue
k1z01s003.kivbf.de194.59.36.5AS50964 Komm-ONE-AS - civillent GmbH, DE194.59.36.5
k1z01s004.kivbf.de194.59.36.6AS50964 Komm-ONE-AS - civillent GmbH, DE194.59.36.6
ns.frei.net213.164.64.1AS13054 BADENIT - badenIT GmbH, DE-

Checks

  • ✓ 3 nameservers #6
    Delegated to k1z01s003.kivbf.de, k1z01s004.kivbf.de, ns.frei.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 2 IPv4 /24s and 0 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS13054 (BADENIT - badenIT GmbH, DE): 1 address; AS50964 (Komm-ONE-AS - civillent GmbH, DE): 2 addresses.
  • ✓ 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
k1z01s003.kivbf.de 194.59.36.5NOERROR, 13 ms, authoritativenoyes / yesrefusedDNS
k1z01s004.kivbf.de 194.59.36.6NOERROR, 8 ms, authoritativenoyes / yesrefusedDNS
ns.frei.net 213.164.64.1NOERROR, 7 ms, authoritativenoyes / yesrefusedFreiNet DNS Service

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: k1z01s003.kivbf.de: "DNS"; k1z01s004.kivbf.de: "DNS"; ns.frei.net: "FreiNet DNS Service".
    #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 2026092902 · primary k1z01s003.kivbf.de

Found

Primary (MNAME)
k1z01s003.kivbf.de
Contact (RNAME)
hostmaster.kivbf.de
Serial
2026092902
Refresh / retry
21600 s / 7200 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
k1z01s003.kivbf.de (194.59.36.5)2026092902
k1z01s004.kivbf.de (194.59.36.6)2026092902
ns.frei.net (213.164.64.1)2026092902

Checks

  • ✓ Serial 2026092902 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 6h, retry 2h, expire 7d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver k1z01s003.kivbf.de is one of the listed nameservers.
  • ✓ Contact hostmaster@kivbf.de #25
    The SOA RNAME hostmaster.kivbf.de means hostmaster@kivbf.de.
  • ✓ Date-based serial #26
    The serial 2026092902 follows the YYYYMMDDnn convention (2026-09-29).

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

17 records at the apex

Found

Read from
194.59.36.5:53
TypeValueTTL
SOAk1z01s003.kivbf.de. hostmaster.kivbf.de. 2026092902 21600 7200 604800 8640086400
NSk1z01s004.kivbf.de.86400
NSns.frei.net.86400
NSk1z01s003.kivbf.de.86400
A78.47.183.20986400
MX10 k10319.mx.fib.zone.3600
TXT"adobe-idp-site-verification=160bbce457108d06aa8a092633887606c27c516da5b47a880531820994c6a619"3600
TXT"v=spf1 a mx ip4:78.47.183.224 ip4:78.46.4.219 include:spf.protect.kvnbw.de include:spf.nl2go.com -all"3600
TXT"MS=D868A5A339ED48771FDE90FFE41B96AED978673E"3600
TXT"MS=ms71013875"3600
TXT"globalsign-domain-verification=QB5t8hEZ3lcRv4okT7YEpmUESTJTtke3XLoFNR9NH8"3600
TXT"swisssign-check=HvcJmeSdTE7y3tTzwfNH8cefDV3K21rInvn65FZGkf"3600
TXT"ZA=nm9mO2nNHSj2VQ8LR/xfoQ=="3600
TXT"sophos-domain-verification=ec259e1843e5c12ef8a02e3ad7e5aacad668b9ad"3600
TXT"apple-domain-verification=ARlFpS1lE2j3Krb4"3600
TXT"duo_sso_verification=cPCWsbUN5gvhrFCJsNxNATt4hZvqpTV9BOlt4mGEqd3ETDCPHMYcwACKD94JkOcE"3600
TXT"brevo-code:f0f339f6bac1447b54682379b7b2f7de"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1d, MX 1h, 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