bistumlimburg.de

Checked 21 October 2026, 21:47 UTC · via 8.8.8.8
!Passed with warnings
19 passed 2 warnings 0 failed 8 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

ns1.web-vision.de, ns2.web-vision.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.web-vision.de, ns2.web-vision.de
NameserverAddressesNetwork (AS)Glue
ns1.web-vision.de (parent only)46.20.47.175 2001:4ba0:92c1:25::175AS24961 MYLOC-AS - WIIT AG, DE AS24961 MYLOC-AS - WIIT AG, DE46.20.47.175 2001:4ba0:92c1:25::175
ns2.web-vision.de (parent only)85.114.131.175 2001:4ba0:92c1:25::176AS24961 MYLOC-AS - WIIT AG, DE AS24961 MYLOC-AS - WIIT AG, DE85.114.131.175 2001:4ba0:92c1:25::176

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.web-vision.de, ns2.web-vision.de.
    #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.
  • i
    One address family in one network
    all IPv6 addresses are in 2001:4ba0:92c1::/48, while the other address family is spread over several networks.
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS24961 (MYLOC-AS - WIIT AG, DE): 4 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 .de
    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

info

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.web-vision.de 46.20.47.175NOERROR, 8 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1.web-vision.de 2001:4ba0:92c1:25::175NOERROR, 8 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns2.web-vision.de 85.114.131.175NOERROR, 7 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns2.web-vision.de 2001:4ba0:92c1:25::176NOERROR, 7 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/

Checks

  • ✓ All respond #14
    All 4 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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ns1.web-vision.de: "Served by PowerDNS - https://www.powerdns.com/"; ns2.web-vision.de: "Served by PowerDNS - https://www.powerdns.com/".
    #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

warn

serial 2026102123 · primary ns1.web-vision.de

Found

Primary (MNAME)
ns1.web-vision.de
Contact (RNAME)
hostmaster.bistumlimburg.de
Serial
2026102123
Refresh / retry
10 s / 3600 s
Expire
10 s
Negative TTL
600 s

Serial per nameserver

NameserverSerial
ns1.web-vision.de (46.20.47.175)2026102123
ns1.web-vision.de (2001:4ba0:92c1:25::175)2026102123
ns2.web-vision.de (85.114.131.175)2026102123
ns2.web-vision.de (2001:4ba0:92c1:25::176)2026102123

Checks

  • ✓ Serial 2026102123 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    refresh 10s is outside 20m–1d; retry 1h should be shorter than refresh 10s; expire 10s is shorter than 7d; secondaries stop answering too soon when the primary is down; expire 10s must be longer than refresh + retry. Current values: refresh 10s, retry 1h, expire 10s, negative TTL 10m.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.web-vision.de is one of the listed nameservers.
  • ✓ Contact hostmaster@bistumlimburg.de #25
    The SOA RNAME hostmaster.bistumlimburg.de means hostmaster@bistumlimburg.de.
  • ✓ Date-based serial #26
    The serial 2026102123 follows the YYYYMMDDnn convention (2026-10-21).

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

info

12 records at the apex

Found

Read from
46.20.47.175:53
TypeValueTTL
SOAns1.web-vision.de. hostmaster.bistumlimburg.de. 2026102123 10 3600 10 6003600
A85.114.131.1663600
MX20 mx02.dioezesennetz.de.3600
MX10 mx01.dioezesennetz.de.3600
TXT"brevo-code:35ed68d8c95aec7ed73b3a3ec2e6d136"3600
TXT"v=spf1 redirect=dioenet-m365.971.767.nic.hosted-spf.net"3600
TXT"_globalsign-domain-verification=GG9wcKoz_hmjU4nDqk1Fqn0ZX5H5BEP0RYv2a8ck0C"3600
TXT"google-site-verification=RDtvASeh1R0qS28knuwXt_5cIHBeDezGnj2RufYhMZ0"3600
TXT"brevo-code:52d90bf7c189b1cf659be982db9ad444"3600
TXT"MS=ms64331250"3600
TXT"aEAI9Rqo2+dd8r092MuFZ6swowu9QteIw76mTwnhQBqMxggpVt0t2JN60HAM8njucHyYNRmHYvhH58HVA/ZELQ=="3600
TXT"domainsecurity-verification=78df49d78a0456785e91069dc3c5eb8bd0986823"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, MX 1h.
  • ✓ 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