ohb.de

Checked 21 October 2026, 23:41 UTC · via 8.8.8.8
!Passed with warnings
21 passed 3 warnings 0 failed 5 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

ns1.ns-network.org, ns2.ns-network.org, ns3.ns-network.org

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.ns-network.org, ns2.ns-network.org, ns3.ns-network.org
NS in the zone
ns1.ns-network.org, ns2.ns-network.org, ns3.ns-network.org
NameserverAddressesNetwork (AS)Glue
ns1.ns-network.org91.99.233.220AS24940 HETZNER-AS - Hetzner Online GmbH, DE-
ns2.ns-network.org46.224.13.10AS24940 HETZNER-AS - Hetzner Online GmbH, DE-
ns3.ns-network.org46.62.201.236AS24940 HETZNER-AS - Hetzner Online GmbH, DE-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns1.ns-network.org, ns2.ns-network.org, ns3.ns-network.org.
  • ✓ 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 3 IPv4 /24s and 0 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS24940 (HETZNER-AS - Hetzner Online GmbH, DE): 3 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 .org
    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

warn

3 of 3 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.ns-network.org 91.99.233.220NOERROR, 3 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.8.3
ns2.ns-network.org 46.224.13.10NOERROR, 8 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.8.3
ns3.ns-network.org 46.62.201.236NOERROR, 24 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.8.3

Checks

  • ✓ All respond #14
    All 3 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: ns1.ns-network.org: "PowerDNS Authoritative Server 4.8.3"; ns2.ns-network.org: "PowerDNS Authoritative Server 4.8.3"; ns3.ns-network.org: "PowerDNS Authoritative Server 4.8.3". 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 2026100601 · primary ns1.ns-network.org

Found

Primary (MNAME)
ns1.ns-network.org
Contact (RNAME)
info.wmdd.de
Serial
2026100601
Refresh / retry
28800 s / 7200 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.ns-network.org (91.99.233.220)2026100601
ns2.ns-network.org (46.224.13.10)2026100601
ns3.ns-network.org (46.62.201.236)2026100601

Checks

  • ✓ Serial 2026100601 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.ns-network.org is one of the listed nameservers.
  • ✓ Contact info@wmdd.de #25
    The SOA RNAME info.wmdd.de means info@wmdd.de.
  • ✓ Date-based serial #26
    The serial 2026100601 follows the YYYYMMDDnn convention (2026-10-06).

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

20 records at the apex

Found

Read from
91.99.233.220:53
TypeValueTTL
SOAns1.ns-network.org. info.wmdd.de. 2026100601 28800 7200 1209600 8640086400
NSns1.ns-network.org.3600
NSns3.ns-network.org.3600
NSns2.ns-network.org.3600
A5.9.152.493600
MX20 mxb-0096e501.gslb.pphosted.com.300
MX10 mxa-0096e501.gslb.pphosted.com.300
TXT"D-TRUST=PL6HAA7QG7WC69RULM6TNBQ"3600
TXT"D-TRUST=Y6LX8WJP3GTVJT6KRZHGSV5"3600
TXT"Kc0zlQl4G3YQOcHuXc8l8qTfAouzStWfaqRyUQB62NI0OehhRl2xqMAKDIri3zqv1gv1FYamL8TBQRFy6l+hZQ=="3600
TXT"MS=ms37350594"3600
TXT"aMnXRRbZJqxY9saYRp8R+uI4JhUYpV7tZF5wybrAAfzi08t9aIu3HAs0UTc94Xc5zbJXwB8teAMVSZ9pLoYWMg=="3600
TXT"apple-domain-verification=deXKsIOCELpzfjRJ"3600
TXT"cisco-ci-domain-verification=b9e8fbfe9a42246131eb848effed1c4f54877525a56aefaa695e480c523e6a2"3600
TXT"globalsign-domain-verification=ReZPLE10ZaU0Pz0vKjZgSeNL0B1mQ0QyyxPK3dZy5y"3600
TXT"have-i-been-pwned-verification=dweb_v4qxjx0otnf4kyu424cgvk2l"3600
TXT"mindmanager-verification=78c8822eccc9574e7390b56f3344b5be8f0de0dfb12bd2c9b6df36fb7375f12a"3600
TXT"swisssign-check=xWGWmAOq-7PqFTNkVEYwHKvnTJg"3600
TXT"v=spf1 include:spf-0096e501.pphosted.com a mx ip4:194.15.215.170 ip4:194.15.215.172 ip4:208.185.229.0/24 ip4:208.185.235.0/24 ip4:148.59.108.0/23 ip4:148.59.106.0/23 ip4:157.90.134.25 ip4:3.123.206.219 ip4:3.68.129.51 ip4:204.14.234.64/" "28 ip4:204.14.232.64/28 ip4:182.50.78.64/28 ip4:96.43.144.64/31 ip4:96.43.148.64/31 ip4:82.198.201.1 ip4:87.129.27.183 include:_spf.salesforce.com include:mailing.eqs.com include:spf.protection.outlook.com -all"3600
TXT"work-accounts-domain-verification=zH7isA8hntK3vC8GSePCMyVsSSs7OP"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, MX 5m, 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.
  • ✓ 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