schueller.de

Checked 22 October 2026, 00:02 UTC · via 8.8.8.8
!Passed with warnings
20 passed 3 warnings 0 failed 6 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

cameron.ns.cloudflare.com, tricia.ns.cloudflare.com

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
cameron.ns.cloudflare.com, tricia.ns.cloudflare.com
NS in the zone
cameron.ns.cloudflare.com, tricia.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
cameron.ns.cloudflare.com172.64.35.107 108.162.195.107 162.159.44.107 2a06:98c1:50::ac40:236b 2803:f800:50::6ca2:c36b 2606:4700:58::a29f:2c6bAS13335 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-
tricia.ns.cloudflare.com173.245.58.232 108.162.192.232 172.64.32.232 2803:f800:50::6ca2:c0e8 2606:4700:50::adf5:3ae8 2a06:98c1:50::ac40:20e8AS13335 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: cameron.ns.cloudflare.com, tricia.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
cameron.ns.cloudflare.com 172.64.35.107NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
cameron.ns.cloudflare.com 108.162.195.107NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
cameron.ns.cloudflare.com 162.159.44.107NOERROR, 32 ms, authoritativenoyes / yesrefused2026.10.2
cameron.ns.cloudflare.com 2a06:98c1:50::ac40:236bNOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
cameron.ns.cloudflare.com 2803:f800:50::6ca2:c36bNOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
cameron.ns.cloudflare.com 2606:4700:58::a29f:2c6bNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
tricia.ns.cloudflare.com 173.245.58.232NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
tricia.ns.cloudflare.com 108.162.192.232NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
tricia.ns.cloudflare.com 172.64.32.232NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
tricia.ns.cloudflare.com 2803:f800:50::6ca2:c0e8NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
tricia.ns.cloudflare.com 2606:4700:50::adf5:3ae8NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
tricia.ns.cloudflare.com 2a06:98c1:50::ac40:20e8NOERROR, 15 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: cameron.ns.cloudflare.com: "2026.10.2"; tricia.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 2417807396 · primary cameron.ns.cloudflare.com

Found

Primary (MNAME)
cameron.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417807396
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
cameron.ns.cloudflare.com (172.64.35.107)2417807396
cameron.ns.cloudflare.com (108.162.195.107)2417807396
cameron.ns.cloudflare.com (162.159.44.107)2417807396
cameron.ns.cloudflare.com (2a06:98c1:50::ac40:236b)2417807396
cameron.ns.cloudflare.com (2803:f800:50::6ca2:c36b)2417807396
cameron.ns.cloudflare.com (2606:4700:58::a29f:2c6b)2417807396
tricia.ns.cloudflare.com (173.245.58.232)2417807396
tricia.ns.cloudflare.com (108.162.192.232)2417807396
tricia.ns.cloudflare.com (172.64.32.232)2417807396
tricia.ns.cloudflare.com (2803:f800:50::6ca2:c0e8)2417807396
tricia.ns.cloudflare.com (2606:4700:50::adf5:3ae8)2417807396
tricia.ns.cloudflare.com (2a06:98c1:50::ac40:20e8)2417807396

Checks

  • ✓ Serial 2417807396 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 cameron.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 2417807396 is a Unix timestamp (2046-08-13 21:09 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

warn

15 records at the apex

Found

Read from
172.64.35.107:53
TypeValueTTL
SOAcameron.ns.cloudflare.com. dns.cloudflare.com. 2417807396 10000 2400 604800 18001800
NScameron.ns.cloudflare.com.86400
NStricia.ns.cloudflare.com.86400
A185.57.242.3060
MX10 mx.schueller.de.60
TXT"GAT7t62c2okIcuy4Gg24mhkpg1o0PxIUQi/fCKLXueo="60
TXT"apple-domain-verification=QNmJ8FSAhPp3GA6D"60
TXT"cisco-ci-domain-verification=4a66c1f1cc18309506fb92eb6f687f97a6bee65e8ff3ab3778c9df4a70519be6"60
TXT"globalsign-domain-verification=4UQ3OmdUNk8udaZwrUlM5IlUEYJS1q-w38Q_sQ53n2"60
TXT"goodnotes-verification=d02d1e82-9267-47a6-b834-4e5b4326a3d4"60
TXT"google-site-verification=dJ7BBTcnBobPkbNkzpxC2lP0lyDfK65cCCvQ072uqUs"60
TXT"miro-verification=2eb034edfc429c36616b302e137e86c1d924c57a"60
TXT"tmes=1a0dca34a3f8cfdf2312b0c3a608967d"60
TXT"v=spf1 mx ip4:62.91.13.236/32 ip4:62.91.64.194/32 ip4:185.57.242.29/32 ip4:185.57.242.30/32 ip4:185.57.240.72/32 ip4:88.99.65.3/32 include:spf.go-2b-planer.de include:_spf.rexx-suite.com include:spf.protection.outlook.com include:_spf.salesforce.com -all"60
TXT"wOTB1eLG89NJ7UmIqXKbK/PuvOmj9flw1zA2epKEEZkrF1I7XZpERu5CQmIkcfRfKfQbjZNiBlrghlRaR0ECOw=="60

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m), MX (1m). 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