duravit.de

Checked 21 October 2026, 22:15 UTC · via 8.8.8.8
!Passed with warnings
26 passed 2 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

a1-36.akam.net, a13-66.akam.net, a14-64.akam.net, a26-67.akam.net, a3-67.akam.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
a1-36.akam.net, a13-66.akam.net, a14-64.akam.net, a26-67.akam.net, a3-67.akam.net
NS in the zone
a1-36.akam.net, a13-66.akam.net, a14-64.akam.net, a26-67.akam.net, a3-67.akam.net
NameserverAddressesNetwork (AS)Glue
a1-36.akam.net193.108.91.36 2600:1401:2::24AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a13-66.akam.net2.22.230.66 2600:1480:800::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a14-64.akam.net184.26.161.64 2600:1480:1800::40AS21342 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-

Checks

  • ✓ 5 nameservers #6
    Delegated to a1-36.akam.net, a13-66.akam.net, a14-64.akam.net, a26-67.akam.net, a3-67.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 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
a1-36.akam.net 193.108.91.36NOERROR, 3 ms, authoritativenoyes / yesrefused41824.7
a1-36.akam.net 2600:1401:2::24NOERROR, 4 ms, authoritativenoyes / yesrefused41824.6
a13-66.akam.net 2.22.230.66NOERROR, 4 ms, authoritativenoyes / yesrefused41824.11
a13-66.akam.net 2600:1480:800::42NOERROR, 4 ms, authoritativenoyes / yesrefused41824.10
a14-64.akam.net 184.26.161.64NOERROR, 3 ms, authoritativenoyes / yesrefused48878.27
a14-64.akam.net 2600:1480:1800::40NOERROR, 4 ms, authoritativenoyes / yesrefused48878.26
a26-67.akam.net 23.74.25.67NOERROR, 3 ms, authoritativenoyes / yesrefused48878.26
a26-67.akam.net 2600:1480:b800::43NOERROR, 4 ms, authoritativenoyes / yesrefused48878.29
a3-67.akam.net 96.7.49.67NOERROR, 3 ms, authoritativenoyes / yesrefused41824.8
a3-67.akam.net 2600:1408:1c::43NOERROR, 4 ms, authoritativenoyes / yesrefused41824.5

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: a1-36.akam.net: "41824.7"; a1-36.akam.net: "41824.6"; a13-66.akam.net: "41824.11"; a13-66.akam.net: "41824.10"; a14-64.akam.net: "48878.27"; a14-64.akam.net: "48878.26"; a26-67.akam.net: "48878.26"; a26-67.akam.net: "48878.29"; a3-67.akam.net: "41824.8"; a3-67.akam.net: "41824.5". 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 2023011181 · primary a1-36.akam.net

Found

Primary (MNAME)
a1-36.akam.net
Contact (RNAME)
hostmaster.duravit.de
Serial
2023011181
Refresh / retry
43200 s / 7200 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
a1-36.akam.net (193.108.91.36)2023011181
a1-36.akam.net (2600:1401:2::24)2023011181
a13-66.akam.net (2.22.230.66)2023011181
a13-66.akam.net (2600:1480:800::42)2023011181
a14-64.akam.net (184.26.161.64)2023011181
a14-64.akam.net (2600:1480:1800::40)2023011181
a26-67.akam.net (23.74.25.67)2023011181
a26-67.akam.net (2600:1480:b800::43)2023011181
a3-67.akam.net (96.7.49.67)2023011181
a3-67.akam.net (2600:1408:1c::43)2023011181

Checks

  • ✓ Serial 2023011181 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 12h, retry 2h, expire 7d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver a1-36.akam.net is one of the listed nameservers.
  • ✓ Contact hostmaster@duravit.de #25
    The SOA RNAME hostmaster.duravit.de means hostmaster@duravit.de.
  • ✓ Date-based serial #26
    The serial 2023011181 follows the YYYYMMDDnn convention (2023-01-11).

DNSSEC

pass

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC3
NSEC3
0 iterations, 0-byte salt
Signatures valid until
24 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
42942ECDSAP256SHA256 (13)SHA256 25136964DD6B3F22…yes

DNSKEY in the zone

Key tagRoleAlgorithm
52238ZSK (256)ECDSAP256SHA256 (13)
36731ZSK (256)ECDSAP256SHA256 (13)
42942KSK (257)ECDSAP256SHA256 (13)
50569KSK (257)ECDSAP256SHA256 (13)

Checks

  • ✓ Signed and validated #27
    The zone is signed, the parent publishes a DS record, and the resolver validates the answers.
  • ✓ DS matches a key #28
    The DS record at the parent matches a key in the zone: key tag 42942 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Short-lived signatures (online signing) #30
    Signatures are valid for 73h0m0s and created on demand; the current one was made at 2026-10-21 19:55 UTC and expires at 2026-10-24 20:55 UTC.
  • ✓ NSEC3 as recommended #31
    The zone uses NSEC3 with 0 iterations and no salt (RFC 9276).

Records

warn

29 records at the apex

Found

Read from
193.108.91.36:53
TypeValueTTL
SOAa1-36.akam.net. hostmaster.duravit.de. 2023011181 43200 7200 604800 8640086400
NSa14-64.akam.net.86400
NSa3-67.akam.net.86400
NSa1-36.akam.net.86400
NSa26-67.akam.net.86400
NSa13-66.akam.net.86400
A104.102.14.8320
AAAA2a02:26f0:b700:282::3a1120
AAAA2a02:26f0:b700:298::3a1120
MX20 mail2.duravit.de.3600
MX0 duravit-de.mail.protection.outlook.com.3600
MX10 mail1.duravit.de.3600
TXT"bw=4UxYfN8tAxWvTmgm9nw9YMX4zFUN/iCHvjaaOMxkg9uZ"3600
TXT"anthropic-domain-verification-2dmtr9=aeKGCV1REIU8gM4BMwiPjh9Jm"3600
TXT"ibmid=a4164524-e34c-4416-8db3-9052e1adbb7b"3600
TXT"MS=9E4D488A9E3B8AC0804C7EB917FD793CDA84D6B4"3600
TXT"facebook-domain-verification=87pv8yo73fizgo3ad54ahhq591hmbo"3600
TXT"_dbw3e7bstg2gdisd3htu0pe1ses5qay"3600
TXT"v=spf1 ip4:213.164.65.67 ip4:62.154.198.240 ip4:62.154.198.241 ip4:62.55.182.68 a:cmail1.com include:_spf.rexx-suite.com include:_spf.zimpel.de include:spf.emailsignatures365.com include:spf.protection.outlook.com include:_spf.createsend.com" " include:_spf.salesforce.com include:amazonses.com -all "3600
TXT"atlassian-domain-verification=Gs7zxtYLoUBV8VbKZgA2VdDvx1ngGvg6bcLvanq/x1JG7CQiquFG4XdGikWaaaC6"3600
TXT"apple-domain-verification=R0ijZgeW3EonU6k7"3600
TXT"_telesec-domain-validation=360031_2026-04-15_apTjb0wnasSlpsetdOAtwBs0AMJPUDdon36effXpNh5Za8xXM1"3600
TXT"_v2psckhnpca9ac8ppjlovf42t3bzu80"3600
TXT"docusign=dd6eb411-7890-4640-be87-b0be68358f59"3600
TXT"google-site-verification=FAOfN-qA70_ha8zKPy3alNS_umiZSeXMplCk3Md6fLg"3600
TXT"openai-domain-verification=dv-aq2PV7nYoXA4BVew78wwthgq"3600
TXT"_a6y6dybni2u19tlw5dbwkxkkh176z97"3600
TXT"adobe-idp-site-verification=e9531e36412c2e07a78be361f93bdffcaa2f4524b7f2b5d9980a9399a84d13d4"3600
TXT"MS=ms85216268"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