decks.de

Checked 21 October 2026, 22:12 UTC · via 8.8.8.8
!Passed with warnings
22 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

julian.ns.cloudflare.com, marge.ns.cloudflare.com

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
julian.ns.cloudflare.com, marge.ns.cloudflare.com
NS in the zone
julian.ns.cloudflare.com, marge.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
julian.ns.cloudflare.com108.162.195.94 172.64.35.94 162.159.44.94 2606:4700:58::a29f:2c5e 2a06:98c1:50::ac40:235e 2803:f800:50::6ca2:c35eAS13335 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-
marge.ns.cloudflare.com173.245.58.191 172.64.32.191 108.162.192.191 2606:4700:50::adf5:3abf 2803:f800:50::6ca2:c0bf 2a06:98c1:50::ac40:20bfAS13335 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: julian.ns.cloudflare.com, marge.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
julian.ns.cloudflare.com 108.162.195.94NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
julian.ns.cloudflare.com 172.64.35.94NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
julian.ns.cloudflare.com 162.159.44.94NOERROR, 32 ms, authoritativenoyes / yesrefused2026.10.2
julian.ns.cloudflare.com 2606:4700:58::a29f:2c5eNOERROR, 19 ms, authoritativenoyes / yesrefused2026.10.2
julian.ns.cloudflare.com 2a06:98c1:50::ac40:235eNOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
julian.ns.cloudflare.com 2803:f800:50::6ca2:c35eNOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
marge.ns.cloudflare.com 173.245.58.191NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
marge.ns.cloudflare.com 172.64.32.191NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
marge.ns.cloudflare.com 108.162.192.191NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
marge.ns.cloudflare.com 2606:4700:50::adf5:3abfNOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
marge.ns.cloudflare.com 2803:f800:50::6ca2:c0bfNOERROR, 19 ms, authoritativenoyes / yesrefused2026.10.2
marge.ns.cloudflare.com 2a06:98c1:50::ac40:20bfNOERROR, 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: julian.ns.cloudflare.com: "2026.10.2"; marge.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 2416913074 · primary julian.ns.cloudflare.com

Found

Primary (MNAME)
julian.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2416913074
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
julian.ns.cloudflare.com (108.162.195.94)2416913074
julian.ns.cloudflare.com (172.64.35.94)2416913074
julian.ns.cloudflare.com (162.159.44.94)2416913074
julian.ns.cloudflare.com (2606:4700:58::a29f:2c5e)2416913074
julian.ns.cloudflare.com (2a06:98c1:50::ac40:235e)2416913074
julian.ns.cloudflare.com (2803:f800:50::6ca2:c35e)2416913074
marge.ns.cloudflare.com (173.245.58.191)2416913074
marge.ns.cloudflare.com (172.64.32.191)2416913074
marge.ns.cloudflare.com (108.162.192.191)2416913074
marge.ns.cloudflare.com (2606:4700:50::adf5:3abf)2416913074
marge.ns.cloudflare.com (2803:f800:50::6ca2:c0bf)2416913074
marge.ns.cloudflare.com (2a06:98c1:50::ac40:20bf)2416913074

Checks

  • ✓ Serial 2416913074 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 julian.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 2416913074 is a Unix timestamp (2046-08-03 12:44 UTC).

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

pass

27 records at the apex

Found

Read from
108.162.195.94:53
TypeValueTTL
SOAjulian.ns.cloudflare.com. dns.cloudflare.com. 2416913074 10000 2400 604800 18001800
NSjulian.ns.cloudflare.com.86400
NSmarge.ns.cloudflare.com.86400
A104.26.9.124300
A104.26.8.124300
A172.67.72.42300
AAAA2606:4700:20::681a:87c300
AAAA2606:4700:20::ac43:482a300
AAAA2606:4700:20::681a:97c300
MX5 smtp.decks.de.300
TXT"0700j32vnqcc7yqflpq1zvkbdqgdw4jk"300
TXT"google-site-verification=jWThWxcuVRtMEUxlSwb65NBYeFmZj2YQu54OCkzIq94"300
TXT"openai-domain-verification=dv-vLSY82I458yYmao5wSZnd3IR"300
TXT"v=spf1 ip4:95.216.106.140 ip4:95.216.36.179 ip4:217.91.81.130 ip4:95.216.36.135 ip4:95.216.36.160 ip4:136.243.42.104 ip4:136.243.42.109 ip4:136.243.42.110 ip4:136.243.42.111 ip4:95.216.43.221 ip4:95.216.43.237 ip4:95.216.93.101 ip4:95.216.93.110 ip4:95.21" "6.113.120 ip4:138.199.141.212 ip4:46.4.207.218 ip4:213.133.103.11 ip4:95.217.88.251 ip6:2a01:4f9:2a:24d0::2 -all"300
CAA0 issue "comodoca.com"300
CAA0 issue "digicert.com; cansignhttpexchanges=yes"300
CAA0 issue "letsencrypt.org"300
CAA0 issue "pki.goog; cansignhttpexchanges=yes"300
CAA0 issue "ssl.com"300
CAA0 issue "www.digicert.com"300
CAA0 issuewild "comodoca.com"300
CAA0 issuewild "digicert.com; cansignhttpexchanges=yes"300
CAA0 issuewild "letsencrypt.org"300
CAA0 issuewild "pki.goog; cansignhttpexchanges=yes"300
CAA0 issuewild "ssl.com"300
CAA0 issuewild "www.digicert.com"300
CAA128 iodef "mailto:webmaster@decks.de"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.
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: comodoca.com, digicert.com, letsencrypt.org, pki.goog, ssl.com, www.digicert.com.