bike24.de

Checked 21 October 2026, 21:40 UTC · via 8.8.8.8
!Passed with warnings
21 passed 3 warnings 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

a1-141.akam.net, a24-67.akam.net, a26-67.akam.net, a3-65.akam.net, a7-65.akam.net, a8-66.akam.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
a1-141.akam.net, a24-67.akam.net, a26-67.akam.net, a3-65.akam.net, a7-65.akam.net, a8-66.akam.net
NS in the zone
a1-141.akam.net, a24-67.akam.net, a26-67.akam.net, a3-65.akam.net, a7-65.akam.net, a8-66.akam.net
NameserverAddressesNetwork (AS)Glue
a1-141.akam.net193.108.91.141 2600:1401:2::8dAS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a24-67.akam.net2.16.130.67 2600:1480:9800::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a26-67.akam.net23.74.25.67 2600:1480:b800::43AS21342 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-
a7-65.akam.net23.61.199.65 2600:1406:32::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a8-66.akam.net2.16.40.66 2600:1403:a::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 6 nameservers #6
    Delegated to a1-141.akam.net, a24-67.akam.net, a26-67.akam.net, a3-65.akam.net, a7-65.akam.net, a8-66.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.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS21342 (AKAMAI-ASN2 - Akamai International B.V., NL): 12 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 .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
a1-141.akam.net 193.108.91.141NOERROR, 3 ms, authoritativenoyes / yesrefused41824.6
a1-141.akam.net 2600:1401:2::8dNOERROR, 4 ms, authoritativenoyes / yesrefused41824.8
a24-67.akam.net 2.16.130.67NOERROR, 3 ms, authoritativenoyes / yesrefused48878.31
a24-67.akam.net 2600:1480:9800::43NOERROR, 4 ms, authoritativenoyes / yesrefused48878.31
a26-67.akam.net 23.74.25.67NOERROR, 3 ms, authoritativenoyes / yesrefused48878.26
a26-67.akam.net 2600:1480:b800::43NOERROR, 4 ms, authoritativenoyes / yesrefused48878.31
a3-65.akam.net 96.7.49.65NOERROR, 3 ms, authoritativenoyes / yesrefused41824.4
a3-65.akam.net 2600:1408:1c::41NOERROR, 3 ms, authoritativenoyes / yesrefused41824.11
a7-65.akam.net 23.61.199.65NOERROR, 3 ms, authoritativenoyes / yesrefused41824.5
a7-65.akam.net 2600:1406:32::41NOERROR, 4 ms, authoritativenoyes / yesrefused41824.10
a8-66.akam.net 2.16.40.66NOERROR, 3 ms, authoritativenoyes / yesrefused48878.29
a8-66.akam.net 2600:1403:a::42NOERROR, 4 ms, authoritativenoyes / yesrefused48878.32

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: a1-141.akam.net: "41824.6"; a1-141.akam.net: "41824.8"; a24-67.akam.net: "48878.31"; a26-67.akam.net: "48878.26"; a26-67.akam.net: "48878.31"; a3-65.akam.net: "41824.4"; a3-65.akam.net: "41824.11"; a7-65.akam.net: "41824.5"; a7-65.akam.net: "41824.10"; a8-66.akam.net: "48878.29"; a8-66.akam.net: "48878.32". 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 2025082624 · primary a1-141.akam.net

Found

Primary (MNAME)
a1-141.akam.net
Contact (RNAME)
hostmaster.bike24.de
Serial
2025082624
Refresh / retry
3600 s / 600 s
Expire
604800 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
a1-141.akam.net (193.108.91.141)2025082624
a1-141.akam.net (2600:1401:2::8d)2025082624
a24-67.akam.net (2.16.130.67)2025082624
a24-67.akam.net (2600:1480:9800::43)2025082624
a26-67.akam.net (23.74.25.67)2025082624
a26-67.akam.net (2600:1480:b800::43)2025082624
a3-65.akam.net (96.7.49.65)2025082624
a3-65.akam.net (2600:1408:1c::41)2025082624
a7-65.akam.net (23.61.199.65)2025082624
a7-65.akam.net (2600:1406:32::41)2025082624
a8-66.akam.net (2.16.40.66)2025082624
a8-66.akam.net (2600:1403:a::42)2025082624

Checks

  • ✓ Serial 2025082624 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 10m, expire 7d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver a1-141.akam.net is one of the listed nameservers.
  • ✓ Contact hostmaster@bike24.de #25
    The SOA RNAME hostmaster.bike24.de means hostmaster@bike24.de.
  • ✓ Date-based serial #26
    The serial 2025082624 follows the YYYYMMDDnn convention (2025-08-26).

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

17 records at the apex

Found

Read from
193.108.91.141:53
TypeValueTTL
SOAa1-141.akam.net. hostmaster.bike24.de. 2025082624 3600 600 604800 3003600
NSa26-67.akam.net.86400
NSa24-67.akam.net.86400
NSa7-65.akam.net.86400
NSa3-65.akam.net.86400
NSa8-66.akam.net.86400
NSa1-141.akam.net.86400
A2.23.176.14120
A2.23.176.14920
AAAA2a02:26f0:b700:14::215:6ecc20
AAAA2a02:26f0:b700:14::215:6ece20
TXT"facebook-domain-verification=7g0nr4s9j09wfz7cve6q1e95ptylij"3600
TXT"google-site-verification=CTGm_gg_uFiZOhYQDT9DH-6s3MbMKPamOrRJHH1iN5g"3600
TXT"google-site-verification=qorS6X0fB6bgXpoQIVfURpR2fxKEpufsdvvBLZU9R-U"3600
TXT"have-i-been-pwned-verification=dweb_acyh0ur2hewpbuei3mtbh5qa"3600
TXT"google-site-verification=u7BNefsRwsWgmYtGxQfXIXt8B8Irlj9gw36PaZ5xmsI"3600
TXT"google-site-verification=S1J1d9H0o7wYRNxJPj72e1inYQsWveweY29pwWYIs8w"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