zeppelin-museum.de

Checked 22 October 2026, 01:20 UTC · via 8.8.8.8
!Passed with warnings
20 passed 2 warnings 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

warn

pns01.dcsix.net, pns02.dcsix.net, pns03.dcsix.net, pns04.dcsix.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
pns01.dcsix.net, pns02.dcsix.net, pns03.dcsix.net, pns04.dcsix.net
NS in the zone
pns01.dcsix.net, pns02.dcsix.net
NameserverAddressesNetwork (AS)Glue
pns01.dcsix.net192.174.68.13 2001:67c:1bc::13AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT-
pns02.dcsix.net176.97.158.13 2001:67c:10b8::13AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT-
pns03.dcsix.net (parent only)192.174.68.13 2001:67c:1bc::13AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT-
pns04.dcsix.net (parent only)176.97.158.13 2001:67c:10b8::13AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT-

Checks

  • ✓ 4 nameservers #6
    Delegated to pns01.dcsix.net, pns02.dcsix.net, pns03.dcsix.net, pns04.dcsix.net.
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only at the parent: pns03.dcsix.net, pns04.dcsix.net. pns01.dcsix.net, pns02.dcsix.net, pns03.dcsix.net, pns04.dcsix.net report NS pns01.dcsix.net pns02.dcsix.net.
    #7
  • ✓ 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 2 IPv4 /24s and 2 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS1921 (RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT): 8 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 .net
    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

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
pns01.dcsix.net 192.174.68.13NOERROR, 4 ms, authoritativenoyes / yesrefusedRcodeZero DNS
pns01.dcsix.net 2001:67c:1bc::13NOERROR, 4 ms, authoritativenoyes / yesrefusedRcodeZero DNS
pns02.dcsix.net 176.97.158.13NOERROR, 12 ms, authoritativenoyes / yesrefusedreg-wie1
pns02.dcsix.net 2001:67c:10b8::13NOERROR, 28 ms, authoritativenoyes / yesrefusedreg-wie1
pns03.dcsix.net 192.174.68.13NOERROR, 3 ms, authoritativenoyes / yesrefusedRcodeZero DNS
pns03.dcsix.net 2001:67c:1bc::13NOERROR, 3 ms, authoritativenoyes / yesrefusedRcodeZero DNS
pns04.dcsix.net 176.97.158.13NOERROR, 25 ms, authoritativenoyes / yesrefusedreg-wie1
pns04.dcsix.net 2001:67c:10b8::13NOERROR, 15 ms, authoritativenoyes / yesrefusedreg-wie1

Checks

  • ✓ All respond #14
    All 8 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: pns01.dcsix.net: "RcodeZero DNS"; pns02.dcsix.net: "reg-wie1"; pns03.dcsix.net: "RcodeZero DNS"; pns04.dcsix.net: "reg-wie1".
    #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 2026071601 · primary pns01.dcsix.net

Found

Primary (MNAME)
pns01.dcsix.net
Contact (RNAME)
hostmaster.dcsix.net
Serial
2026071601
Refresh / retry
14400 s / 3600 s
Expire
604800 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
pns01.dcsix.net (192.174.68.13)2026071601
pns01.dcsix.net (2001:67c:1bc::13)2026071601
pns02.dcsix.net (176.97.158.13)2026071601
pns02.dcsix.net (2001:67c:10b8::13)2026071601
pns03.dcsix.net (192.174.68.13)2026071601
pns03.dcsix.net (2001:67c:1bc::13)2026071601
pns04.dcsix.net (176.97.158.13)2026071601
pns04.dcsix.net (2001:67c:10b8::13)2026071601

Checks

  • ✓ Serial 2026071601 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 4h, retry 1h, expire 7d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver pns01.dcsix.net is one of the listed nameservers.
  • ✓ Contact hostmaster@dcsix.net #25
    The SOA RNAME hostmaster.dcsix.net means hostmaster@dcsix.net.
  • ✓ Date-based serial #26
    The serial 2026071601 follows the YYYYMMDDnn convention (2026-07-16).

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

7 records at the apex

Found

Read from
192.174.68.13:53
TypeValueTTL
SOApns01.dcsix.net. hostmaster.dcsix.net. 2026071601 14400 3600 604800 36003600
NSpns01.dcsix.net.3600
NSpns02.dcsix.net.3600
A5.57.43.1143600
MX10 mx.united-host.de.3600
TXT"apple-domain-verification=VG5IZu1GgYJObSVG"3600
TXT"v=spf1 ip4:83.246.40.175 redirect=_spf.united-host.de"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, MX 1h, NS 1h. The NS TTL at the parent is 1d and in the zone 1h; resolvers may use either.
  • ✓ 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