americanairlines.de

Checked 21 October 2026, 21:28 UTC · via 8.8.8.8
!Passed with warnings
19 passed 3 warnings 0 failed 7 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

asia3.akam.net, eur4.akam.net, ns1-37.akam.net, ns1-46.akam.net, use4.akam.net, usw1.akam.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
asia3.akam.net, eur4.akam.net, ns1-37.akam.net, ns1-46.akam.net, use4.akam.net, usw1.akam.net
NS in the zone
asia3.akam.net, eur4.akam.net, ns1-37.akam.net, ns1-46.akam.net, use4.akam.net, usw1.akam.net
NameserverAddressesNetwork (AS)Glue
asia3.akam.net23.211.61.64AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
eur4.akam.net84.53.139.64AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
ns1-37.akam.net193.108.91.37 2600:1401:2::25AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
ns1-46.akam.net193.108.91.46 2600:1401:2::2eAS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
use4.akam.net23.211.133.65AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
usw1.akam.net23.61.199.66AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 6 nameservers #6
    Delegated to asia3.akam.net, eur4.akam.net, ns1-37.akam.net, ns1-46.akam.net, use4.akam.net, usw1.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.
  • i
    One address family in one network
    all IPv6 addresses are in 2600:1401:2::/48, while the other address family is spread over several networks.
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS21342 (AKAMAI-ASN2 - Akamai International B.V., NL): 8 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
  • i
    Partly IPv6
    These nameservers have no IPv6 address: asia3.akam.net, eur4.akam.net, use4.akam.net, usw1.akam.net.
    #13

Nameservers

warn

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
asia3.akam.net 23.211.61.64NOERROR, 3 ms, authoritativenoyes / yesrefused48878.32
eur4.akam.net 84.53.139.64NOERROR, 3 ms, authoritativenoyes / yesrefused41824.5
ns1-37.akam.net 193.108.91.37NOERROR, 3 ms, authoritativenoyes / yesrefused41824.10
ns1-37.akam.net 2600:1401:2::25NOERROR, 4 ms, authoritativenoyes / yesrefused41824.7
ns1-46.akam.net 193.108.91.46NOERROR, 3 ms, authoritativenoyes / yesrefused41824.9
ns1-46.akam.net 2600:1401:2::2eNOERROR, 3 ms, authoritativenoyes / yesrefused41824.4
use4.akam.net 23.211.133.65NOERROR, 3 ms, authoritativenoyes / yesrefused48878.29
usw1.akam.net 23.61.199.66NOERROR, 3 ms, authoritativenoyes / yesrefused41824.6

Checks

  • ✓ All respond #14
    All 8 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: asia3.akam.net: "48878.32"; eur4.akam.net: "41824.5"; ns1-37.akam.net: "41824.10"; ns1-37.akam.net: "41824.7"; ns1-46.akam.net: "41824.9"; ns1-46.akam.net: "41824.4"; use4.akam.net: "48878.29"; usw1.akam.net: "41824.6". 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 2012061140 · primary asia3.akam.net

Found

Primary (MNAME)
asia3.akam.net
Contact (RNAME)
admincontact.aa.com
Serial
2012061140
Refresh / retry
10800 s / 3600 s
Expire
604800 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
asia3.akam.net (23.211.61.64)2012061140
eur4.akam.net (84.53.139.64)2012061140
ns1-37.akam.net (193.108.91.37)2012061140
ns1-37.akam.net (2600:1401:2::25)2012061140
ns1-46.akam.net (193.108.91.46)2012061140
ns1-46.akam.net (2600:1401:2::2e)2012061140
use4.akam.net (23.211.133.65)2012061140
usw1.akam.net (23.61.199.66)2012061140

Checks

  • ✓ Serial 2012061140 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 7d, negative TTL 15m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver asia3.akam.net is one of the listed nameservers.
  • ✓ Contact admincontact@aa.com #25
    The SOA RNAME admincontact.aa.com means admincontact@aa.com.
  • ✓ Date-based serial #26
    The serial 2012061140 follows the YYYYMMDDnn convention (2012-06-11).

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

12 records at the apex

Found

Read from
23.211.61.64:53
TypeValueTTL
SOAasia3.akam.net. admincontact.aa.com. 2012061140 10800 3600 604800 9007200
NSuse4.akam.net.7200
NSns1-46.akam.net.7200
NSns1-37.akam.net.7200
NSasia3.akam.net.7200
NSusw1.akam.net.7200
NSeur4.akam.net.7200
A23.222.80.14320
MX10 mail.americanairlines.de.7200
MX20 mail.ffm.plusline.de.7200
MX30 mail.s.plusline.de.7200
TXT"kctgbq1lx5nphhx1bjmhllhf75kqw8fj"900

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 2h; 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