creative-city-berlin.de

Checked 21 October 2026, 22:11 UTC · via 8.8.8.8
!Passed with warnings
24 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

alexa.ns.cloudflare.com, devin.ns.cloudflare.com

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
alexa.ns.cloudflare.com, devin.ns.cloudflare.com
NS in the zone
alexa.ns.cloudflare.com, devin.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
alexa.ns.cloudflare.com162.159.38.215 172.64.34.215 108.162.194.215 2803:f800:50::6ca2:c2d7 2a06:98c1:50::ac40:22d7 2606:4700:50::a29f:26d7AS13335 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-
devin.ns.cloudflare.com162.159.44.49 108.162.195.49 172.64.35.49 2a06:98c1:50::ac40:2331 2606:4700:58::a29f:2c31 2803:f800:50::6ca2:c331AS13335 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: alexa.ns.cloudflare.com, devin.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
alexa.ns.cloudflare.com 162.159.38.215NOERROR, 32 ms, authoritativenoyes / yesrefused2026.10.2
alexa.ns.cloudflare.com 172.64.34.215NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
alexa.ns.cloudflare.com 108.162.194.215NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
alexa.ns.cloudflare.com 2803:f800:50::6ca2:c2d7NOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
alexa.ns.cloudflare.com 2a06:98c1:50::ac40:22d7NOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
alexa.ns.cloudflare.com 2606:4700:50::a29f:26d7NOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
devin.ns.cloudflare.com 162.159.44.49NOERROR, 32 ms, authoritativenoyes / yesrefused2026.10.2
devin.ns.cloudflare.com 108.162.195.49NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
devin.ns.cloudflare.com 172.64.35.49NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
devin.ns.cloudflare.com 2a06:98c1:50::ac40:2331NOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
devin.ns.cloudflare.com 2606:4700:58::a29f:2c31NOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
devin.ns.cloudflare.com 2803:f800:50::6ca2:c331NOERROR, 18 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: alexa.ns.cloudflare.com: "2026.10.2"; devin.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 2417612523 · primary alexa.ns.cloudflare.com

Found

Primary (MNAME)
alexa.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417612523
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
alexa.ns.cloudflare.com (162.159.38.215)2417612523
alexa.ns.cloudflare.com (172.64.34.215)2417612523
alexa.ns.cloudflare.com (108.162.194.215)2417612523
alexa.ns.cloudflare.com (2803:f800:50::6ca2:c2d7)2417612523
alexa.ns.cloudflare.com (2a06:98c1:50::ac40:22d7)2417612523
alexa.ns.cloudflare.com (2606:4700:50::a29f:26d7)2417612523
devin.ns.cloudflare.com (162.159.44.49)2417612523
devin.ns.cloudflare.com (108.162.195.49)2417612523
devin.ns.cloudflare.com (172.64.35.49)2417612523
devin.ns.cloudflare.com (2a06:98c1:50::ac40:2331)2417612523
devin.ns.cloudflare.com (2606:4700:58::a29f:2c31)2417612523
devin.ns.cloudflare.com (2803:f800:50::6ca2:c331)2417612523

Checks

  • ✓ Serial 2417612523 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 alexa.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 2417612523 is a Unix timestamp (2046-08-11 15:02 UTC).

DNSSEC

pass

Signed, DS published at parent

Found

Validated by resolver
yes
Signatures valid until
22 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
2371ECDSAP256SHA256 (13)SHA256 86859D4DB9F4EC5F…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 21:11 UTC and expires at 2026-10-22 23:11 UTC.

Records

info

13 records at the apex

Found

Read from
162.159.38.215:53
TypeValueTTL
SOAalexa.ns.cloudflare.com. dns.cloudflare.com. 2417612523 10000 2400 604800 18001800
NSalexa.ns.cloudflare.com.86400
NSdevin.ns.cloudflare.com.86400
A104.26.11.91300
A104.26.10.91300
A172.67.74.112300
AAAA2606:4700:20::681a:b5b300
AAAA2606:4700:20::681a:a5b300
AAAA2606:4700:20::ac43:4a70300
MX10 mx00.udag.de.300
MX20 mx01.udag.de.300
TXT"google-site-verification=EQopxfZ1bYn5Cqz9mnB2E2QWg0_EeOlvppfuP2iBejw"300
TXT"google-site-verification=NNA3GxSmGnTWCRiy6VYGki8f4Ei5rVtgaZzlIE538mM"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, AAAA 5m, MX 5m, NS 1d.
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • i
    Wildcard record
    A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.
    #34
  • 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