jacob.de

Checked 21 October 2026, 23:01 UTC · via 8.8.8.8
!Passed with warnings
23 passed 1 warning 0 failed 5 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

ns63.domaincontrol.com, ns64.domaincontrol.com

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns63.domaincontrol.com, ns64.domaincontrol.com
NS in the zone
ns63.domaincontrol.com, ns64.domaincontrol.com
NameserverAddressesNetwork (AS)Glue
ns63.domaincontrol.com97.74.101.42 2603:5:2154::2aAS26496 AS-26496-GO-DADDY-COM-LLC - GoDaddy.com, LLC, US AS44273 GODADDY-DNS - Host Europe GmbH, DE-
ns64.domaincontrol.com173.201.69.42 2603:5:2254::2aAS44273 GODADDY-DNS - Host Europe GmbH, DE AS44273 GODADDY-DNS - Host Europe GmbH, DE-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns63.domaincontrol.com, ns64.domaincontrol.com.
    #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.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS26496 (AS-26496-GO-DADDY-COM-LLC - GoDaddy.com, LLC, US): 1 address; AS44273 (GODADDY-DNS - Host Europe GmbH, DE): 3 addresses.
  • i
    All nameserver names under .com
    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

pass

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns63.domaincontrol.com 97.74.101.42NOERROR, 7 ms, authoritativenoyes / yesrefused-
ns63.domaincontrol.com 2603:5:2154::2aNOERROR, 7 ms, authoritativenoyes / yesrefused-
ns64.domaincontrol.com 173.201.69.42NOERROR, 6 ms, authoritativenoyes / yesrefused-
ns64.domaincontrol.com 2603:5:2254::2aNOERROR, 7 ms, authoritativenoyes / 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.
  • ✓ 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 2026102101 · primary ns63.domaincontrol.com

Found

Primary (MNAME)
ns63.domaincontrol.com
Contact (RNAME)
dns.jomax.net
Serial
2026102101
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
600 s

Serial per nameserver

NameserverSerial
ns63.domaincontrol.com (97.74.101.42)2026102101
ns63.domaincontrol.com (2603:5:2154::2a)2026102101
ns64.domaincontrol.com (173.201.69.42)2026102101
ns64.domaincontrol.com (2603:5:2254::2a)2026102101

Checks

  • ✓ Serial 2026102101 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 7d, negative TTL 10m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns63.domaincontrol.com is one of the listed nameservers.
  • ✓ Contact dns@jomax.net #25
    The SOA RNAME dns.jomax.net means dns@jomax.net.
  • ✓ Date-based serial #26
    The serial 2026102101 follows the YYYYMMDDnn convention (2026-10-21).

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

22 records at the apex

Found

Read from
97.74.101.42:53
TypeValueTTL
SOAns63.domaincontrol.com. dns.jomax.net. 2026102101 28800 7200 604800 6003600
NSns63.domaincontrol.com.3600
NSns64.domaincontrol.com.3600
A109.109.206.28600
AAAA2a02:788:10e:100::ac0b:2001600
MX50 smtp.jacob-computer.de.600
TXT"google-site-verification=xTrAQcnniCBlIGQYxkvN3JPMG59mMVkpdIV6iS-IdZM"600
TXT"google-site-verification=zIEEqPzlnEiQyiMFYpOvHfwLMZGLzYCnHssgqKYi0yw"600
TXT"google-site-verification=W4CTWuCoxYhwi7hQ7iimIh7Ygevq99fqeaHLq5jzwr0"600
TXT"MS=ms83841445"600
TXT"iapelfd54o18r4ofn05rs63th3"600
TXT"v=spf1 mx ip4:109.109.206.20 ?all"600
TXT"atlassian-domain-verification=mRa5BPWRlOw9FbuKgJEJ2LVpt0VUDn1lEoUF85VYcg9qLxeTVCWpq2z5Q0v1GGpv"600
TXT"google-site-verification=VUT8ZdsF8RtTtG4CBq0GYVJdn6ff8BE9fsre2Mqpb4w"600
TXT"google-site-verification=60Jd9XK2zGaAC0Mg1BF3dyRBZRhNeBiAnwNMEWhLyDw"600
TXT"sophos-domain-verification=b7a9ed6676ba6b6273313840e05f99558d2144f0d53d2ad6635ad8019ec49eff"600
TXT"anthropic-domain-verification-p6ykqq=KJpcuxniZex2qRA8lZTZllGON"600
TXT"apple-domain-verification=bIqZdyTGSyMLBiXA"600
TXT"jal/OcDlA7XVaobcWcdGejVVTAviT5Foeeiqapfgrv0hSRNcNLnQaAj5LI+ZWjLWS65qhJrkcg1D/I1ep2yKAA=="600
TXT"ZOOM_verify_ULiHm3WhTVOT6kXtDa2fWw"600
TXT"openai-domain-verification=dv-2rl3vbjjnR1NINumZcDqnN5Q"600
TXT"klaviyo-site-verification=XiMU6t"600

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, AAAA 10m, MX 10m, NS 1h. The NS TTL at the parent is 1d and in the zone 1h; 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