domradio.de

Checked 21 October 2026, 22:14 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

a1-222.akam.net, a22-64.akam.net, a4-65.akam.net, a7-67.akam.net, a8-67.akam.net, a9-67.akam.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
a1-222.akam.net, a22-64.akam.net, a4-65.akam.net, a7-67.akam.net, a8-67.akam.net, a9-67.akam.net
NS in the zone
a1-222.akam.net, a22-64.akam.net, a4-65.akam.net, a7-67.akam.net, a8-67.akam.net, a9-67.akam.net
NameserverAddressesNetwork (AS)Glue
a1-222.akam.net193.108.91.222 2600:1401:2::deAS20940 AKAMAI-ASN1 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a22-64.akam.net23.211.61.64 2600:1480:7800::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a4-65.akam.net72.246.46.65 2600:1480:9000::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a7-67.akam.net23.61.199.67 2600:1406:32::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a8-67.akam.net2.16.40.67 2600:1403:a::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a9-67.akam.net184.85.248.67 2a02:26f0:117::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 6 nameservers #6
    Delegated to a1-222.akam.net, a22-64.akam.net, a4-65.akam.net, a7-67.akam.net, a8-67.akam.net, a9-67.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
a1-222.akam.net 193.108.91.222NOERROR, 3 ms, authoritativenoyes / yesrefused41824.10
a1-222.akam.net 2600:1401:2::deNOERROR, 4 ms, authoritativenoyes / yesrefused41824.4
a22-64.akam.net 23.211.61.64NOERROR, 3 ms, authoritativenoyes / yesrefused48878.33
a22-64.akam.net 2600:1480:7800::40NOERROR, 3 ms, authoritativenoyes / yesrefused48878.31
a4-65.akam.net 72.246.46.65NOERROR, 4 ms, authoritativenoyes / yesrefused48878.32
a4-65.akam.net 2600:1480:9000::41NOERROR, 4 ms, authoritativenoyes / yesrefused48878.27
a7-67.akam.net 23.61.199.67NOERROR, 3 ms, authoritativenoyes / yesrefused41824.11
a7-67.akam.net 2600:1406:32::43NOERROR, 3 ms, authoritativenoyes / yesrefused41824.7
a8-67.akam.net 2.16.40.67NOERROR, 4 ms, authoritativenoyes / yesrefused48878.27
a8-67.akam.net 2600:1403:a::43NOERROR, 5 ms, authoritativenoyes / yesrefused48878.26
a9-67.akam.net 184.85.248.67NOERROR, 3 ms, authoritativenoyes / yesrefused41824.4
a9-67.akam.net 2a02:26f0:117::43NOERROR, 4 ms, authoritativenoyes / yesrefused41824.7

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: a1-222.akam.net: "41824.10"; a1-222.akam.net: "41824.4"; a22-64.akam.net: "48878.33"; a22-64.akam.net: "48878.31"; a4-65.akam.net: "48878.32"; a4-65.akam.net: "48878.27"; a7-67.akam.net: "41824.11"; a7-67.akam.net: "41824.7"; a8-67.akam.net: "48878.27"; a8-67.akam.net: "48878.26"; a9-67.akam.net: "41824.4"; a9-67.akam.net: "41824.7". 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 2023103057 · primary a1-222.akam.net

Found

Primary (MNAME)
a1-222.akam.net
Contact (RNAME)
techdesk.domradio.de
Serial
2023103057
Refresh / retry
43200 s / 7200 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
a1-222.akam.net (193.108.91.222)2023103057
a1-222.akam.net (2600:1401:2::de)2023103057
a22-64.akam.net (23.211.61.64)2023103057
a22-64.akam.net (2600:1480:7800::40)2023103057
a4-65.akam.net (72.246.46.65)2023103057
a4-65.akam.net (2600:1480:9000::41)2023103057
a7-67.akam.net (23.61.199.67)2023103057
a7-67.akam.net (2600:1406:32::43)2023103057
a8-67.akam.net (2.16.40.67)2023103057
a8-67.akam.net (2600:1403:a::43)2023103057
a9-67.akam.net (184.85.248.67)2023103057
a9-67.akam.net (2a02:26f0:117::43)2023103057

Checks

  • ✓ Serial 2023103057 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 12h, retry 2h, expire 7d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver a1-222.akam.net is one of the listed nameservers.
  • ✓ Contact techdesk@domradio.de #25
    The SOA RNAME techdesk.domradio.de means techdesk@domradio.de.
  • ✓ Date-based serial #26
    The serial 2023103057 follows the YYYYMMDDnn convention (2023-10-30).

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

21 records at the apex

Found

Read from
193.108.91.222:53
TypeValueTTL
SOAa1-222.akam.net. techdesk.domradio.de. 2023103057 43200 7200 604800 8640086400
NSa9-67.akam.net.86400
NSa8-67.akam.net.86400
NSa7-67.akam.net.86400
NSa4-65.akam.net.86400
NSa22-64.akam.net.86400
NSa1-222.akam.net.86400
A2.16.1.18420
A2.16.1.22420
AAAA2a02:26f0:2780:68::217:e35720
AAAA2a02:26f0:2780:68::217:e34620
MX0 domradio-de.mail.protection.outlook.com.600
TXT"sophos-domain-verification=ecf1b8f580258b1f2d01e5a0acc544cd96eb99465127b5f818bbba8554069ef3"3600
TXT"adobe-idp-site-verification=15af6c275e2a8169af4311b1d3581dc1458f919f9289edf619029579a0d45391"3600
TXT"v=spf1 a mx a:mx1.domradio.de ip4:87.79.9.66/32 ip4:188.40.68.229/32 ip4:83.137.172.128/28 ip4:212.243.158.155/32 " "ip4:83.137.172.132/32 ip4:78.35.6.98/32 ip4:81.173.193.132/32 ip4:81.173.193.131/32 ip4:168.119.145.200/32 ip4:142.132.133.210/32 include:spf.crsend.com include:_spf_eucentral1.prod.hydra.sophos.com include:spf.protection.outlook.com -all"3600
TXT"sophos-domain-verification=fb8d0bce89f2e09e104720a0a59d669b22a7f6e7"3600
TXT"openai-domain-verification=dv-v02nV91D3zm9lJw4OGzZaupF"3600
TXT"MS=ms84737156"3600
TXT"google-site-verification=T0cts485kT5WJyyxaJpEFZ6NwVVFD0MP-0QnWYZgy0A"3600
TXT"google-site-verification=s77LHGi5BQuEAIEoKuT0wR5_x4S_V9L7k_2eSneJ-TY"3600
TXT"apple-domain-verification=nCJU9WKt6kck8MGx"3600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (20s), AAAA (20s). Low TTLs are useful just before a planned change.
    #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