crif.de

Checked 21 October 2026, 22:11 UTC · via 8.8.8.8
!Passed with warnings
22 passed 3 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

info

a1-161.akam.net, a13-66.akam.net, a14-67.akam.net, a20-64.akam.net, a3-65.akam.net, a4-66.akam.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
a1-161.akam.net, a13-66.akam.net, a14-67.akam.net, a20-64.akam.net, a3-65.akam.net, a4-66.akam.net
NS in the zone
a1-161.akam.net, a13-66.akam.net, a14-67.akam.net, a20-64.akam.net, a3-65.akam.net, a4-66.akam.net
NameserverAddressesNetwork (AS)Glue
a1-161.akam.net193.108.91.161 2600:1401:2::a1AS20940 AKAMAI-ASN1 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a13-66.akam.net2.22.230.66 2600:1480:800::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a14-67.akam.net184.26.161.67 2600:1480:1800::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a20-64.akam.net95.100.175.64 2a02:26f0:67::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a3-65.akam.net96.7.49.65 2600:1408:1c::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a4-66.akam.net72.246.46.66 2600:1480:9000::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 6 nameservers #6
    Delegated to a1-161.akam.net, a13-66.akam.net, a14-67.akam.net, a20-64.akam.net, a3-65.akam.net, a4-66.akam.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 6 IPv4 /24s and 6 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS20940 (AKAMAI-ASN1 - Akamai International B.V., NL): 1 address; AS21342 (AKAMAI-ASN2 - Akamai International B.V., NL): 11 addresses.
  • 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

warn

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
a1-161.akam.net 193.108.91.161NOERROR, 4 ms, authoritativenoyes / yesrefused41824.5
a1-161.akam.net 2600:1401:2::a1NOERROR, 6 ms, authoritativenoyes / yesrefused41824.7
a13-66.akam.net 2.22.230.66NOERROR, 6 ms, authoritativenoyes / yesrefused41824.5
a13-66.akam.net 2600:1480:800::42NOERROR, 6 ms, authoritativenoyes / yesrefused41824.4
a14-67.akam.net 184.26.161.67NOERROR, 5 ms, authoritativenoyes / yesrefused48878.33
a14-67.akam.net 2600:1480:1800::43NOERROR, 4 ms, authoritativenoyes / yesrefused48878.30
a20-64.akam.net 95.100.175.64NOERROR, 6 ms, authoritativenoyes / yesrefused48878.33
a20-64.akam.net 2a02:26f0:67::40NOERROR, 5 ms, authoritativenoyes / yesrefused48878.26
a3-65.akam.net 96.7.49.65NOERROR, 4 ms, authoritativenoyes / yesrefused41824.7
a3-65.akam.net 2600:1408:1c::41NOERROR, 6 ms, authoritativenoyes / yesrefused41824.11
a4-66.akam.net 72.246.46.66NOERROR, 4 ms, authoritativenoyes / yesrefused48878.33
a4-66.akam.net 2600:1480:9000::42NOERROR, 4 ms, authoritativenoyes / yesrefused48878.33

Checks

  • ✓ All respond #14
    All 12 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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: a1-161.akam.net: "41824.5"; a1-161.akam.net: "41824.7"; a13-66.akam.net: "41824.5"; a13-66.akam.net: "41824.4"; a14-67.akam.net: "48878.33"; a14-67.akam.net: "48878.30"; a20-64.akam.net: "48878.33"; a20-64.akam.net: "48878.26"; a3-65.akam.net: "41824.7"; a3-65.akam.net: "41824.11"; a4-66.akam.net: "48878.33". Hide or replace the version string.
    #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 2020011797 · primary a1-161.akam.net

Found

Primary (MNAME)
a1-161.akam.net
Contact (RNAME)
admin.cribisnet.it
Serial
2020011797
Refresh / retry
43200 s / 3600 s
Expire
604800 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
a1-161.akam.net (193.108.91.161)2020011797
a1-161.akam.net (2600:1401:2::a1)2020011797
a13-66.akam.net (2.22.230.66)2020011797
a13-66.akam.net (2600:1480:800::42)2020011797
a14-67.akam.net (184.26.161.67)2020011797
a14-67.akam.net (2600:1480:1800::43)2020011797
a20-64.akam.net (95.100.175.64)2020011797
a20-64.akam.net (2a02:26f0:67::40)2020011797
a3-65.akam.net (96.7.49.65)2020011797
a3-65.akam.net (2600:1408:1c::41)2020011797
a4-66.akam.net (72.246.46.66)2020011797
a4-66.akam.net (2600:1480:9000::42)2020011797

Checks

  • ✓ Serial 2020011797 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 12h, retry 1h, expire 7d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver a1-161.akam.net is one of the listed nameservers.
  • ✓ Contact admin@cribisnet.it #25
    The SOA RNAME admin.cribisnet.it means admin@cribisnet.it.
  • ✓ Date-based serial #26
    The serial 2020011797 follows the YYYYMMDDnn convention (2020-01-17).

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

20 records at the apex

Found

Read from
193.108.91.161:53
TypeValueTTL
SOAa1-161.akam.net. admin.cribisnet.it. 2020011797 43200 3600 604800 300300
NSa1-161.akam.net.300
NSa13-66.akam.net.300
NSa20-64.akam.net.300
NSa3-65.akam.net.300
NSa14-67.akam.net.300
NSa4-66.akam.net.300
A2.16.204.3320
A2.16.204.3220
TXT"MS=ms41553790"300
TXT"google-site-verification=LbT1VytnwA9oVLaTfcJQpgG-rKPpEurkK4NVzLGi-NA"300
TXT"q0y5rsvrdkvwgl0rl42891hf5kpy3vqy"300
TXT"_globalsign-domain-verification=msk8ZMRd4-DhVjC1ku8FzEX9Vs-Qk9d7TPfUtb23s4"300
TXT"_globalsign-domain-verification=YiLxkvYVebdPQdlzqpnkS4GJUUw_0jYRGE1RniN0XQ"300
TXT"_globalsign-domain-verification=PLHg0S_h-_SjDlU7OmWioWDRq3eASjT4iA3LdYbhRe"300
TXT"_globalsign-domain-verification=AZSOJKPyMxB7BB4mZc7VS6NdFLQm1Dl7scDELUIzwj"300
TXT"_globalsign-domain-verification=JJGzpiHpXEXMwZhuy-RUOCRyIcsJv1wN8EHg-6f8tP"300
TXT"v=spf1 mx include:_spf.crif.com ~all"300
TXT"_globalsign-domain-verification=wejqZNx9xnCbrVEpCcphvM1LAcMi0YXDfa_zKNnncD"300
TXT"google-site-verification=AblP0sOPyufCMy62e6O167NKHUWANBJ3IaJZ1zq4aRg"300

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (20s). 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