biontech.de

Checked 21 October 2026, 21:47 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

a1-250.akam.net, a12-64.akam.net, a24-65.akam.net, a26-67.akam.net, a3-67.akam.net, a7-67.akam.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
a1-250.akam.net, a12-64.akam.net, a24-65.akam.net, a26-67.akam.net, a3-67.akam.net, a7-67.akam.net
NS in the zone
a1-250.akam.net, a12-64.akam.net, a24-65.akam.net, a26-67.akam.net, a3-67.akam.net, a7-67.akam.net
NameserverAddressesNetwork (AS)Glue
a1-250.akam.net193.108.91.250 2600:1401:2::faAS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a12-64.akam.net184.26.160.64 2600:1480:f000::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a24-65.akam.net2.16.130.65 2600:1480:9800::41AS21342 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-
a3-67.akam.net96.7.49.67 2600:1408:1c::43AS21342 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-

Checks

  • ✓ 6 nameservers #6
    Delegated to a1-250.akam.net, a12-64.akam.net, a24-65.akam.net, a26-67.akam.net, a3-67.akam.net, a7-67.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.
  • 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
a1-250.akam.net 193.108.91.250NOERROR, 4 ms, authoritativenoyes / yesrefused41824.9
a1-250.akam.net 2600:1401:2::faNOERROR, 4 ms, authoritativenoyes / yesrefused41824.6
a12-64.akam.net 184.26.160.64NOERROR, 4 ms, authoritativenoyes / yesrefused48878.33
a12-64.akam.net 2600:1480:f000::40NOERROR, 5 ms, authoritativenoyes / yesrefused48878.31
a24-65.akam.net 2.16.130.65NOERROR, 5 ms, authoritativenoyes / yesrefused48878.31
a24-65.akam.net 2600:1480:9800::41NOERROR, 5 ms, authoritativenoyes / yesrefused48878.33
a26-67.akam.net 23.74.25.67NOERROR, 3 ms, authoritativenoyes / yesrefused48878.29
a26-67.akam.net 2600:1480:b800::43NOERROR, 5 ms, authoritativenoyes / yesrefused48878.26
a3-67.akam.net 96.7.49.67NOERROR, 3 ms, authoritativenoyes / yesrefused41824.9
a3-67.akam.net 2600:1408:1c::43NOERROR, 4 ms, authoritativenoyes / yesrefused41824.8
a7-67.akam.net 23.61.199.67NOERROR, 4 ms, authoritativenoyes / yesrefused41824.4
a7-67.akam.net 2600:1406:32::43NOERROR, 4 ms, authoritativenoyes / yesrefused41824.8

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: a1-250.akam.net: "41824.9"; a1-250.akam.net: "41824.6"; a12-64.akam.net: "48878.33"; a12-64.akam.net: "48878.31"; a24-65.akam.net: "48878.31"; a24-65.akam.net: "48878.33"; a26-67.akam.net: "48878.29"; a26-67.akam.net: "48878.26"; a3-67.akam.net: "41824.9"; a3-67.akam.net: "41824.8"; a7-67.akam.net: "41824.4"; a7-67.akam.net: "41824.8". 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

info

serial 2025090359 · primary ns.udag.de

Found

Primary (MNAME)
ns.udag.de
Contact (RNAME)
hostmaster.united-domains.de
Serial
2025090359
Refresh / retry
10800 s / 3600 s
Expire
604800 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
a1-250.akam.net (193.108.91.250)2025090359
a1-250.akam.net (2600:1401:2::fa)2025090359
a12-64.akam.net (184.26.160.64)2025090359
a12-64.akam.net (2600:1480:f000::40)2025090359
a24-65.akam.net (2.16.130.65)2025090359
a24-65.akam.net (2600:1480:9800::41)2025090359
a26-67.akam.net (23.74.25.67)2025090359
a26-67.akam.net (2600:1480:b800::43)2025090359
a3-67.akam.net (96.7.49.67)2025090359
a3-67.akam.net (2600:1408:1c::43)2025090359
a7-67.akam.net (23.61.199.67)2025090359
a7-67.akam.net (2600:1406:32::43)2025090359

Checks

  • ✓ Serial 2025090359 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 7d, negative TTL 1h.
  • i
    Hidden master
    The primary nameserver ns.udag.de is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.
    #24
  • ✓ Contact hostmaster@united-domains.de #25
    The SOA RNAME hostmaster.united-domains.de means hostmaster@united-domains.de.
  • ✓ Date-based serial #26
    The serial 2025090359 follows the YYYYMMDDnn convention (2025-09-03).

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

49 records at the apex

Found

Read from
193.108.91.250:53
TypeValueTTL
SOAns.udag.de. hostmaster.united-domains.de. 2025090359 10800 3600 604800 360086400
NSa3-67.akam.net.86400
NSa24-65.akam.net.86400
NSa1-250.akam.net.86400
NSa26-67.akam.net.86400
NSa12-64.akam.net.86400
NSa7-67.akam.net.86400
A2.16.204.9220
A2.16.204.8120
AAAA2a02:26f0:b700:5::210:cc1720
AAAA2a02:26f0:b700:5::210:cc0820
MX10 mxa-006a3d01.gslb.pphosted.com.600
MX10 mxb-006a3d01.gslb.pphosted.com.600
TXT"_globalsign-domain-verification=6H3ZN6Sg3SMHons7i6adCAks8ogPf5A_0gLWKZp_Vl"600
TXT"swisssign-check=jjProTIhxTUvPVjebtabT1dGmaI"600
TXT"google-site-verification=CBJp4RGjQgL5ChGLv8ELr9wN4_sm39NMGQTQ653aSZM"600
TXT"sendinblue-code:3164c7fe385e6a0197bea2893af01b16"600
TXT"knowbe4-site-verification=b0d062b777f145d860e864f795596644"600
TXT"_globalsign-domain-verification=wKsmR3_jG_XFyrnEafY1mO5agPXO9C2NNO5VuPK7BL"600
TXT"SFMC-Ec_J1GHhqcVDSoD_dTm-3WVOqnm1IjaOywcuDlyn"600
TXT"neat-pulse-domain-verification-Rvkl1zX=a8422739-3382-4790-8561-285799d37348"600
TXT"google-site-verification=-r_aLHy22kKz3xBiM9ktAY4Gqq5XdeKBb2-YOLWq9Uk"600
TXT"sendinblue-code:97a9cdaf73a3764d10f6b381b5ccc8bd"600
TXT"_globalsign-domain-verification=TGCyT-CJ4nmqYkS1R3GTLybKmGut9MU8GJJw94Ey3g"600
TXT"_globalsign-domain-verification=UYjcibRSNfWIF7YgvwNEkWR6lvyDvx-51OWvhMsraU"600
TXT"airtable-verification=e8b3b4e9df39aaa13b75c48c61a971d3"600
TXT"TXTZOOM_verify_fIGUSOKdTn6ZS3VhmLUZ5Q"600
TXT"shopify-verification-code=SkzdfRt9wyX5THOXE0ySvbG4JNMAfv"600
TXT"_globalsign-domain-verification=m_uFWv8SMRkOK9mX95qH8eVPLGAUYtfYbuoPmX0nsw"600
TXT"miro-verification=2ccd45a14540d7b30de0d1f9fc0fb7e6a120be2c"600
TXT"onetrust-domain-verification=2fc7b32eccd74cd9a112080369102c67"600
TXT"docusign=93e62db7-d584-47e9-9842-3f3b1123bfa8"600
TXT"sendinblue-code:2f6f691545daf484fe3922460147ec07"600
TXT"_globalsign-domain-verification=NSDSwSxrXYKOtKBn7cnepfBpgC9n8o58d3_2GpCHru"600
TXT"Dynatrace-site-verification=62e2ed73-fc56-4086-bc5f-c8b203c66b74__btp64ohpa48llkgul9c4c5ait1"600
TXT"adobe-idp-site-verification=1be17142f0a1b2092e8c44105124d211c18c44ebe23f7c3c70c04cad17667fa6"600
TXT"google-site-verification=KShnP127-CEK1meXYToEu0mGoYG347Hmv8bG6Setp18"600
TXT"atlassian-domain-verification=efVhmH6AlB9KuoHAF8Igh7hOThtCaUBP3ZezWraDiams5C2grqfXLLNMs33apaIK"600
TXT"swisssign-check=UR1qNHWDebKmgIA-uEMzupTVCRk"600
TXT"v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com include:mail.zendesk.com ~all"600
TXT"apple-domain-verification=s3e7Xvl98J6fwJQZ"600
TXT"MS=4EAB696CB8649487799B75F1567D0FE4EC112577"600
TXT"sendinblue-code:874585ff9b6605eba735acd3e4f530ff"600
CAA0 iodef "mailto:raimond.jaehn@biontech.de"600
CAA0 issue "awstrust.com"600
CAA0 issue "letsencrypt.org"600
CAA0 issue "globalsign.com"600
CAA0 issue "sectigo.com"600
CAA0 issue "swisssign.com"600

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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: awstrust.com, letsencrypt.org, globalsign.com, sectigo.com, swisssign.com.