artnet.de

Checked 21 October 2026, 21:30 UTC · via 8.8.8.8
!Passed with warnings
25 passed 1 warning 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

duke.ns.cloudflare.com, pam.ns.cloudflare.com

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
duke.ns.cloudflare.com, pam.ns.cloudflare.com
NS in the zone
duke.ns.cloudflare.com, pam.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
duke.ns.cloudflare.com108.162.193.110 172.64.33.110 173.245.59.110 2606:4700:58::adf5:3b6e 2803:f800:50::6ca2:c16e 2a06:98c1:50::ac40:216eAS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-
pam.ns.cloudflare.com108.162.192.138 172.64.32.138 173.245.58.138 2803:f800:50::6ca2:c08a 2606:4700:50::adf5:3a8a 2a06:98c1:50::ac40:208aAS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: duke.ns.cloudflare.com, pam.ns.cloudflare.com.
    #6
  • ✓ 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 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS13335 (CLOUDFLARENET - Cloudflare, Inc., US): 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 .com
    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
duke.ns.cloudflare.com 108.162.193.110NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
duke.ns.cloudflare.com 172.64.33.110NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
duke.ns.cloudflare.com 173.245.59.110NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
duke.ns.cloudflare.com 2606:4700:58::adf5:3b6eNOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
duke.ns.cloudflare.com 2803:f800:50::6ca2:c16eNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
duke.ns.cloudflare.com 2a06:98c1:50::ac40:216eNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
pam.ns.cloudflare.com 108.162.192.138NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
pam.ns.cloudflare.com 172.64.32.138NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
pam.ns.cloudflare.com 173.245.58.138NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
pam.ns.cloudflare.com 2803:f800:50::6ca2:c08aNOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
pam.ns.cloudflare.com 2606:4700:50::adf5:3a8aNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
pam.ns.cloudflare.com 2a06:98c1:50::ac40:208aNOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2

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: duke.ns.cloudflare.com: "2026.10.2"; pam.ns.cloudflare.com: "2026.10.2". 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 2417642961 · primary duke.ns.cloudflare.com

Found

Primary (MNAME)
duke.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417642961
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
duke.ns.cloudflare.com (108.162.193.110)2417642961
duke.ns.cloudflare.com (172.64.33.110)2417642961
duke.ns.cloudflare.com (173.245.59.110)2417642961
duke.ns.cloudflare.com (2606:4700:58::adf5:3b6e)2417642961
duke.ns.cloudflare.com (2803:f800:50::6ca2:c16e)2417642961
duke.ns.cloudflare.com (2a06:98c1:50::ac40:216e)2417642961
pam.ns.cloudflare.com (108.162.192.138)2417642961
pam.ns.cloudflare.com (172.64.32.138)2417642961
pam.ns.cloudflare.com (173.245.58.138)2417642961
pam.ns.cloudflare.com (2803:f800:50::6ca2:c08a)2417642961
pam.ns.cloudflare.com (2606:4700:50::adf5:3a8a)2417642961
pam.ns.cloudflare.com (2a06:98c1:50::ac40:208a)2417642961

Checks

  • ✓ Serial 2417642961 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h46m40s, retry 40m, expire 7d, negative TTL 30m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver duke.ns.cloudflare.com is one of the listed nameservers.
  • ✓ Contact dns@cloudflare.com #25
    The SOA RNAME dns.cloudflare.com means dns@cloudflare.com.
  • ✓ Timestamp serial #26
    The serial 2417642961 is a Unix timestamp (2046-08-11 23:29 UTC).

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC
Signatures valid until
22 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
2371ECDSAP256SHA256 (13)SHA256 B3D40AA8BEC38A28…yes

DNSKEY in the zone

Key tagRoleAlgorithm
2371KSK (257)ECDSAP256SHA256 (13)
34505ZSK (256)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 2371 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Short-lived signatures (online signing) #30
    Signatures are valid for 50h0m0s and created on demand; the current one was made at 2026-10-20 20:30 UTC and expires at 2026-10-22 22:30 UTC.
  • i
    NSEC
    The zone uses NSEC, so its full contents can be listed by walking the NSEC chain. That is fine unless the names are sensitive.
    #31

Records

info

21 records at the apex

Found

Read from
108.162.193.110:53
TypeValueTTL
SOAduke.ns.cloudflare.com. dns.cloudflare.com. 2417642961 10000 2400 604800 18001800
NSduke.ns.cloudflare.com.86400
NSpam.ns.cloudflare.com.86400
A188.114.96.2300
A188.114.97.2300
MX10 aspmx.l.google.com.300
MX20 alt1.aspmx.l.google.com.300
MX20 alt2.aspmx.l.google.com.300
MX20 alt3.aspmx.l.google.com.300
MX20 alt4.aspmx.l.google.com.300
TXT"MS=ms14593775"300
TXT"anthropic-domain-verification-vzef83=SXBsNCoVtBU63QiGJOql31kHH"300
TXT"globalsign-domain-verification=3FA2DF69DE761454B3C28A56EB81353E"300
TXT"globalsign-domain-verification=5E3495E7A069BE7F5499EAA0C8122614"300
TXT"globalsign-domain-verification=E768B8E83145EBD2F3819194CA6257E5"300
TXT"globalsign-domain-verification=aa938ee4170b49ec0edc3996635597e1"300
TXT"google-site-verification=bBX8RyA9uuN4QMyvHFasjMAWpjTlDUXX9JsX45rpG1w"300
TXT"google-site-verification=j5tbZy-qvBUH_-DjJnrhJc6IvFaGWyjtewP-U_AjNxE"300
TXT"google-site-verification=oqy32ybqyXaXduOHU9Gb_5sSQRPwTocTxgsuY6bQBcE"300
TXT"google-site-verification=wFQpTGuLfbsThngpZJ83a_lYHErImMCndN3W6Bsx318"300
TXT"v=spf1 -all"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 5m, NS 1d.
  • ✓ 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