westermann.de

Checked 22 October 2026, 01:00 UTC · via 8.8.8.8
!Passed with warnings
22 passed 3 warnings 0 failed 4 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

ns.gaertner.de, ns.westermann.de, ns2.pop-hannover.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns.gaertner.de, ns.westermann.de, ns2.pop-hannover.net
NS in the zone
ns.gaertner.de, ns.westermann.de, ns2.pop-hannover.net
NameserverAddressesNetwork (AS)Glue
ns.gaertner.de217.13.65.2 2a00:1030:0:44::2AS24956 GDS-1 - Gaertner Datensysteme GmbH & Co. KG, DE AS24956 GDS-1 - Gaertner Datensysteme GmbH & Co. KG, DE217.13.65.2 2a00:1030:0:44::2
ns.westermann.de217.13.73.1AS24956 GDS-1 - Gaertner Datensysteme GmbH & Co. KG, DE217.13.73.1
ns2.pop-hannover.net62.48.67.66 2a00:e68:0:2::6AS15743 NETDE - net.de AG, DE AS15743 NETDE - net.de AG, DE-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns.gaertner.de, ns.westermann.de, ns2.pop-hannover.net.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ Glue present and correct #8
    Glue is published for the nameservers inside the zone: ns.westermann.de.
  • ✓ 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 3 IPv4 /24s and 2 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS15743 (NETDE - net.de AG, DE): 2 addresses; AS24956 (GDS-1 - Gaertner Datensysteme GmbH & Co. KG, DE): 3 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .de, .net.
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns.westermann.de.
    #13

Nameservers

warn

5 of 5 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns.gaertner.de 217.13.65.2NOERROR, 10 ms, authoritativenoyes / yesrefused9.18.39-0ubuntu0.24.04.8-Ubuntu
ns.gaertner.de 2a00:1030:0:44::2NOERROR, 10 ms, authoritativenoyes / yesrefused9.18.39-0ubuntu0.24.04.8-Ubuntu
ns.westermann.de 217.13.73.1NOERROR, 11 ms, authoritativenoyes / yesrefusedBIND
ns2.pop-hannover.net 62.48.67.66NOERROR, 11 ms, authoritativenoyes / yesrefused-
ns2.pop-hannover.net 2a00:e68:0:2::6NOERROR, 11 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 5 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: ns.gaertner.de: "9.18.39-0ubuntu0.24.04.8-Ubuntu". 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 2026109205 · primary ns.westermann.de

Found

Primary (MNAME)
ns.westermann.de
Contact (RNAME)
hostmaster.westermann.de
Serial
2026109205
Refresh / retry
86400 s / 7200 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns.gaertner.de (217.13.65.2)2026109205
ns.gaertner.de (2a00:1030:0:44::2)2026109205
ns.westermann.de (217.13.73.1)2026109205
ns2.pop-hannover.net (62.48.67.66)2026109205
ns2.pop-hannover.net (2a00:e68:0:2::6)2026109205

Checks

  • ✓ Serial 2026109205 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1d, retry 2h, expire 7d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns.westermann.de is one of the listed nameservers.
  • ✓ Contact hostmaster@westermann.de #25
    The SOA RNAME hostmaster.westermann.de means hostmaster@westermann.de.
  • ✓ Timestamp serial #26
    The serial 2026109205 is a Unix timestamp (2034-03-16 08:06 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

10 records at the apex

Found

Read from
217.13.65.2:53
TypeValueTTL
SOAns.westermann.de. hostmaster.westermann.de. 2026109205 86400 7200 604800 8640014400
NSns.gaertner.de.14400
NSns2.pop-hannover.net.14400
NSns.westermann.de.14400
A217.13.73.8760
MX10 westermann-de.mail.protection.outlook.com.14400
TXT"google-site-verification=sKNjh88bSZmLM1D82Nq9qOf8UEGYcoLn-EfJKw7KFgI"14400
TXT"google-site-verification=oXwbh-JbnYp-uGt9qDtDenwuGJ-PrYi5m1KrIN6hEuE"14400
TXT"v=spf1 include:spf.westermann.de -all"14400
TXT"swisssign-check=rhPwmh-ZTqWapHUd5yHt-DAumRk"14400

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1d and in the zone 4h; resolvers may use either.
    #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