busch-jaeger.de

Checked 21 October 2026, 22:00 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

a1-226.akam.net, a10-66.akam.net, a13-65.akam.net, a22-65.akam.net, a4-64.akam.net, a7-64.akam.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
a1-226.akam.net, a10-66.akam.net, a13-65.akam.net, a22-65.akam.net, a4-64.akam.net, a7-64.akam.net
NS in the zone
a1-226.akam.net, a10-66.akam.net, a13-65.akam.net, a22-65.akam.net, a4-64.akam.net, a7-64.akam.net
NameserverAddressesNetwork (AS)Glue
a1-226.akam.net193.108.91.226 2600:1401:2::e2AS20940 AKAMAI-ASN1 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a10-66.akam.net96.7.50.66 2600:1480:d000::42AS21342 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-
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-
a4-64.akam.net72.246.46.64 2600:1480:9000::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a7-64.akam.net23.61.199.64 2600:1406:32::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 6 nameservers #6
    Delegated to a1-226.akam.net, a10-66.akam.net, a13-65.akam.net, a22-65.akam.net, a4-64.akam.net, a7-64.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
a1-226.akam.net 193.108.91.226NOERROR, 3 ms, authoritativenoyes / yesrefused41824.5
a1-226.akam.net 2600:1401:2::e2NOERROR, 4 ms, authoritativenoyes / yesrefused41824.10
a10-66.akam.net 96.7.50.66NOERROR, 3 ms, authoritativenoyes / yesrefused48878.33
a10-66.akam.net 2600:1480:d000::42NOERROR, 4 ms, authoritativenoyes / yesrefused48878.26
a13-65.akam.net 2.22.230.65NOERROR, 5 ms, authoritativenoyes / yesrefused41824.11
a13-65.akam.net 2600:1480:800::41NOERROR, 5 ms, authoritativenoyes / yesrefused41824.4
a22-65.akam.net 23.211.61.65NOERROR, 3 ms, authoritativenoyes / yesrefused48878.32
a22-65.akam.net 2600:1480:7800::41NOERROR, 3 ms, authoritativenoyes / yesrefused48878.32
a4-64.akam.net 72.246.46.64NOERROR, 4 ms, authoritativenoyes / yesrefused48878.31
a4-64.akam.net 2600:1480:9000::40NOERROR, 4 ms, authoritativenoyes / yesrefused48878.32
a7-64.akam.net 23.61.199.64NOERROR, 4 ms, authoritativenoyes / yesrefused41824.7
a7-64.akam.net 2600:1406:32::40NOERROR, 4 ms, authoritativenoyes / yesrefused41824.10

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: a1-226.akam.net: "41824.5"; a1-226.akam.net: "41824.10"; a10-66.akam.net: "48878.33"; a10-66.akam.net: "48878.26"; a13-65.akam.net: "41824.11"; a13-65.akam.net: "41824.4"; a22-65.akam.net: "48878.32"; a4-64.akam.net: "48878.31"; a4-64.akam.net: "48878.32"; a7-64.akam.net: "41824.7"; a7-64.akam.net: "41824.10". 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

warn

serial 332 · primary a1-226.akam.net

Found

Primary (MNAME)
a1-226.akam.net
Contact (RNAME)
dnsmaster.abb.com
Serial
332
Refresh / retry
900 s / 600 s
Expire
86400 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
a1-226.akam.net (193.108.91.226)332
a1-226.akam.net (2600:1401:2::e2)332
a10-66.akam.net (96.7.50.66)332
a10-66.akam.net (2600:1480:d000::42)332
a13-65.akam.net (2.22.230.65)332
a13-65.akam.net (2600:1480:800::41)332
a22-65.akam.net (23.211.61.65)332
a22-65.akam.net (2600:1480:7800::41)332
a4-64.akam.net (72.246.46.64)332
a4-64.akam.net (2600:1480:9000::40)332
a7-64.akam.net (23.61.199.64)332
a7-64.akam.net (2600:1406:32::40)332

Checks

  • ✓ Serial 332 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    refresh 15m is outside 20m–1d; expire 1d is shorter than 7d; secondaries stop answering too soon when the primary is down. Current values: refresh 15m, retry 10m, expire 1d, negative TTL 1h.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver a1-226.akam.net is one of the listed nameservers.
  • ✓ Contact dnsmaster@abb.com #25
    The SOA RNAME dnsmaster.abb.com means dnsmaster@abb.com.
  • ✓ Counter serial #26
    The serial 332 is a plain counter.

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

info

22 records at the apex

Found

Read from
193.108.91.226:53
TypeValueTTL
SOAa1-226.akam.net. dnsmaster.abb.com. 332 900 600 86400 36003600
NSa1-226.akam.net.3600
NSa13-65.akam.net.3600
NSa10-66.akam.net.3600
NSa7-64.akam.net.3600
NSa22-65.akam.net.3600
NSa4-64.akam.net.3600
A23.55.163.138600
MX10 mx01.pixelpark.com.3600
MX10 mx02.pixelpark.com.3600
TXT"_ofpak4l35lp6cuosyh3nfubap4wrmm3"300
TXT"google-site-verification=n3CrnNEDtV0pIRLlO4mTc8XBcG0A50hz7j4j2ZIn7iY"300
TXT"_8sws06mlkfntmii1v4snjindjuuqyyy"300
TXT"_94ah1j63ncpl5719r4iczfnemyayzlu"300
TXT"Sendinblue-code:dd0e8fae1f15761be0dafafc62ecff0b"300
TXT"tc9vpih4h4c93ckgr26deg48r0"300
TXT"_ros1cwmoa83qgd4z6k42jk4r21vi56w"300
TXT"y2qccb1gtsy5nynr8xh8y5fbx41fjvn2"300
TXT"v=spf1 include:spf.sendinblue.com mx ~all"300
TXT"_g1x6tvmdp23fs8wtiy8ucb7xijj9bht"300
TXT"sght2qcj75lchhqfdlk5778ldfwr1try"300
TXT"_l6n7pjnwjuw3v5hgfd4cktnt8xn9u04"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, MX 1h, NS 1h. The NS TTL at the parent is 1d and in the zone 1h; resolvers may use either.
  • ✓ 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