aida.de

Checked 21 October 2026, 21:28 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

a1-9.akam.net, a11-67.akam.net, a13-65.akam.net, a2-65.akam.net, a22-65.akam.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
a1-9.akam.net, a11-67.akam.net, a13-65.akam.net, a2-65.akam.net, a22-65.akam.net
NS in the zone
a1-9.akam.net, a11-67.akam.net, a13-65.akam.net, a2-65.akam.net, a22-65.akam.net
NameserverAddressesNetwork (AS)Glue
a1-9.akam.net193.108.91.9 2600:1401:2::9AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a11-67.akam.net84.53.139.67 2600:1480:1::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a13-65.akam.net2.22.230.65 2600:1480:800::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a2-65.akam.net95.100.174.65 2600:1480:7000::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a22-65.akam.net23.211.61.65 2600:1480:7800::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 5 nameservers #6
    Delegated to a1-9.akam.net, a11-67.akam.net, a13-65.akam.net, a2-65.akam.net, a22-65.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 5 IPv4 /24s and 5 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): 10 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

10 of 10 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
a1-9.akam.net 193.108.91.9NOERROR, 3 ms, authoritativenoyes / yesrefused41824.6
a1-9.akam.net 2600:1401:2::9NOERROR, 4 ms, authoritativenoyes / yesrefused41824.5
a11-67.akam.net 84.53.139.67NOERROR, 3 ms, authoritativenoyes / yesrefused41824.5
a11-67.akam.net 2600:1480:1::43NOERROR, 3 ms, authoritativenoyes / yesrefused41824.9
a13-65.akam.net 2.22.230.65NOERROR, 4 ms, authoritativenoyes / yesrefused41824.6
a13-65.akam.net 2600:1480:800::41NOERROR, 4 ms, authoritativenoyes / yesrefused41824.7
a2-65.akam.net 95.100.174.65NOERROR, 3 ms, authoritativenoyes / yesrefused48878.29
a2-65.akam.net 2600:1480:7000::41NOERROR, 4 ms, authoritativenoyes / yesrefused48878.33
a22-65.akam.net 23.211.61.65NOERROR, 3 ms, authoritativenoyes / yesrefused48878.32
a22-65.akam.net 2600:1480:7800::41NOERROR, 4 ms, authoritativenoyes / yesrefused48878.31

Checks

  • ✓ All respond #14
    All 10 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: a1-9.akam.net: "41824.6"; a1-9.akam.net: "41824.5"; a11-67.akam.net: "41824.5"; a11-67.akam.net: "41824.9"; a13-65.akam.net: "41824.6"; a13-65.akam.net: "41824.7"; a2-65.akam.net: "48878.29"; a2-65.akam.net: "48878.33"; a22-65.akam.net: "48878.32"; a22-65.akam.net: "48878.31". 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 2022060596 · primary a1-9.akam.net

Found

Primary (MNAME)
a1-9.akam.net
Contact (RNAME)
hostmaster.aida.de
Serial
2022060596
Refresh / retry
3600 s / 600 s
Expire
604800 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
a1-9.akam.net (193.108.91.9)2022060596
a1-9.akam.net (2600:1401:2::9)2022060596
a11-67.akam.net (84.53.139.67)2022060596
a11-67.akam.net (2600:1480:1::43)2022060596
a13-65.akam.net (2.22.230.65)2022060596
a13-65.akam.net (2600:1480:800::41)2022060596
a2-65.akam.net (95.100.174.65)2022060596
a2-65.akam.net (2600:1480:7000::41)2022060596
a22-65.akam.net (23.211.61.65)2022060596
a22-65.akam.net (2600:1480:7800::41)2022060596

Checks

  • ✓ Serial 2022060596 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 a1-9.akam.net is one of the listed nameservers.
  • ✓ Contact hostmaster@aida.de #25
    The SOA RNAME hostmaster.aida.de means hostmaster@aida.de.
  • ✓ Date-based serial #26
    The serial 2022060596 follows the YYYYMMDDnn convention (2022-06-05).

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

28 records at the apex

Found

Read from
193.108.91.9:53
TypeValueTTL
SOAa1-9.akam.net. hostmaster.aida.de. 2022060596 3600 600 604800 30086400
NSa2-65.akam.net.86400
NSa1-9.akam.net.86400
NSa11-67.akam.net.86400
NSa13-65.akam.net.86400
NSa22-65.akam.net.86400
A2.16.204.13320
A2.16.204.14320
AAAA2a02:26f0:b700:5::210:cc0c20
AAAA2a02:26f0:b700:5::210:cc1c20
MX5 aida-de.mail.protection.outlook.com.3600
TXT"cisco-ci-domain-verification=70237b401585b3c5fac6e3cd75f27d286392b5952115ca453bd18fb1e958a2cd"3600
TXT"atlassian-domain-verification=V/jfCsCdRPrlCkR2j2BYMpnFoKmQtxRy4SyEGB9JcUqzYwFxuPAxXh3ANmTbga1J"3600
TXT"_0uj5ecevtdvm6nk1b0vxlilw1l0upzz"3600
TXT"onetrust-domain-verification=1967e5e273f24da1ae8f117ec49a7bc2"3600
TXT"v=spf1 mx include:spf.protection.outlook.com a:smtpw.cytric.net include:inxserver.com ip4:141.144.229.35 ip4:138.2.142.134 ip4:54.171.131.249 " "include:spf.tds.de mx:costa.it ip4:185.18.100.0/24 include:amazonses.com " "ip4:213.146.75.21 ip4:213.146.75.22 ip4:213.146.75.23 -all"3600
TXT"adobe-idp-site-verification=23e95d3b03a9f08628d6b773f615d1ddf787dacb937bc31f08336cf0ed49cc7b"3600
TXT"onetrust-domain-verification=89720faa2f4b42e4a6254e8a5688812a"3600
TXT"cp8kp5hq5c4v000lwq2fm73z62lsbmtp"3600
TXT"google-site-verification=qEnTTjpOzqK8mKesjjosWfKuzrOsuMIOuhihZZstP-g"3600
TXT"h1-domain-verification=RgVVAtH9iBADxHncCZhmmrmgbANLypReKyAvgto3HpXJWCkq"3600
TXT"miro-verification=060646df411d795671ffcb712732b8c05036a6df"3600
TXT"openai-domain-verification=dv-noO0LSZIpmdVHnjcSa9NGEjf"3600
TXT"r7qhrq3qhv1942d79n1qtl84gsxp440w"3600
TXT"Dynatrace-site-verification=f032e6a7-3702-492f-84a6-f33b9cd783a2__2rl2eh7ki6dim18o4i5u89fadl"3600
TXT"infoblox-domain-mastery=d36cd23eb96ce528444eb83fae27cf56bf29339697dabb63d559d697c07c926827"3600
TXT"try-hack-me-domain-verification-yh47mh=2A6rGglX5gXHNZS3iR2tKdR82"3600
TXT"mandrill_verify.K46PmWHJhKaor5KHruZTmQ"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