klima-systeme2000.de

Checked 21 October 2026, 23:10 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

ns5.pwdserver.de, ns6.pwdserver.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns5.pwdserver.de, ns6.pwdserver.de
NS in the zone
ns5.pwdserver.de, ns6.pwdserver.de
NameserverAddressesNetwork (AS)Glue
ns5.pwdserver.de84.19.163.254AS31103 KEYWEB-AS - Keyweb AG, DE-
ns6.pwdserver.de84.19.169.3AS31103 KEYWEB-AS - Keyweb AG, DE-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns5.pwdserver.de, ns6.pwdserver.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.
  • ✓ Nameservers in different networks #10
    The nameservers are spread over 2 IPv4 /24s and 0 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS31103 (KEYWEB-AS - Keyweb AG, DE): 2 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
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

info

2 of 2 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns5.pwdserver.de 84.19.163.254NOERROR, 9 ms, authoritativenoyes / yesrefusedN/A
ns6.pwdserver.de 84.19.169.3NOERROR, 9 ms, authoritativenoyes / yesrefusedN/A

Checks

  • ✓ All respond #14
    All 2 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: ns5.pwdserver.de: "N/A"; ns6.pwdserver.de: "N/A".
    #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 2026102102 · primary ns5.pwdserver.de

Found

Primary (MNAME)
ns5.pwdserver.de
Contact (RNAME)
domreg.pwd.de
Serial
2026102102
Refresh / retry
7200 s / 540 s
Expire
604800 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns5.pwdserver.de (84.19.163.254)2026102102
ns6.pwdserver.de (84.19.169.3)2026102102

Checks

  • ✓ Serial 2026102102 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 9m, expire 7d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns5.pwdserver.de is one of the listed nameservers.
  • ✓ Contact domreg@pwd.de #25
    The SOA RNAME domreg.pwd.de means domreg@pwd.de.
  • ✓ Date-based serial #26
    The serial 2026102102 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

8 records at the apex

Found

Read from
84.19.163.254:53
TypeValueTTL
SOAns5.pwdserver.de. domreg.pwd.de. 2026102102 7200 540 604800 36003600
NSns6.pwdserver.de.86400
NSns5.pwdserver.de.86400
A84.19.169.2686400
MX0 klimasysteme2000-de01c.mail.protection.outlook.com.3600
TXT"v=spf1 include:spf.protection.outlook.com include:_spf-e.cegedim.fr include:_spf-i.cegedim.fr -all"3600
TXT"MS=ms81632993"3600
CAA0 issue "letsencrypt.org"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1d, MX 1h, 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
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: letsencrypt.org.