dbwv.de

Checked 21 October 2026, 22:12 UTC · via 8.8.8.8
!Passed with warnings
19 passed 3 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

ns0.dns-net.de, ns7.dns-net.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns0.dns-net.de, ns7.dns-net.de
NS in the zone
ns0.dns-net.de, ns7.dns-net.de
NameserverAddressesNetwork (AS)Glue
ns0.dns-net.de212.91.230.34AS15366 DNSNET - DNS:NET Internet Service GmbH, DE212.91.230.34
ns7.dns-net.de212.91.231.34AS15366 DNSNET - DNS:NET Internet Service GmbH, DE212.91.231.34

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns0.dns-net.de, ns7.dns-net.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 (AS15366 (DNSNET - DNS:NET Internet Service GmbH, 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

warn

2 of 2 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns0.dns-net.de 212.91.230.34NOERROR, 14 ms, authoritativenoyes / yesrefused9.8.4-rpz2+rl005.12-P1
ns7.dns-net.de 212.91.231.34NOERROR, 14 ms, authoritativenoyes / yesrefused9.2.4

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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns0.dns-net.de: "9.8.4-rpz2+rl005.12-P1"; ns7.dns-net.de: "9.2.4". 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 2026090401 · primary ns0.dns-net.de

Found

Primary (MNAME)
ns0.dns-net.de
Contact (RNAME)
hostmaster.dns-net.de
Serial
2026090401
Refresh / retry
10800 s / 3600 s
Expire
3600000 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns0.dns-net.de (212.91.230.34)2026090401
ns7.dns-net.de (212.91.231.34)2026090401

Checks

  • ✓ Serial 2026090401 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 1000h, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns0.dns-net.de is one of the listed nameservers.
  • ✓ Contact hostmaster@dns-net.de #25
    The SOA RNAME hostmaster.dns-net.de means hostmaster@dns-net.de.
  • ✓ Date-based serial #26
    The serial 2026090401 follows the YYYYMMDDnn convention (2026-09-04).

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

22 records at the apex

Found

Read from
212.91.230.34:53
TypeValueTTL
SOAns0.dns-net.de. hostmaster.dns-net.de. 2026090401 10800 3600 3600000 8640086400
NSns0.dns-net.de.600
NSns7.dns-net.de.600
A212.91.230.1203600
MX0 dbwv-de.mail.protection.outlook.com.3600
TXT"goodnotes-verification=dca073e4-5857-45cd-93c6-2604e7f9d88a"3600
TXT"cisco-ci-domain-verification=bd03969b6a4ef82dfdf81179abc8d26bae45fa720d92cec690cf2999712882b"3600
TXT"atlassian-domain-verification=J4YSjuuvBztkHxbiodw2Dl5f1mePF74J3LbdQlkaP1nMkRL5XEhNanoF4RgiH0z0"3600
TXT"v=spf1 mx a include:spf.tixxt.com include:spf.protection.outlook.com include:spf.academymaker.de include:mailgun.org include:spf.sendinblue.com include:webmail.woelferdruck.de include:ispgateway.de ip4:185.65.194.175 -all"3600
TXT"MS=ms28700480"3600
TXT"apple-domain-verification=qpFxGldUDX3PMy7C"3600
TXT"MS=B51786F25874718CCA153CCAD8F052B60462048C"3600
TXT"MS=D9014B3FFE601FB5E431BA25B8C0CE9EE39879FB"3600
TXT"brevo-code:1fa522b81217902e1ceb8b9d1507d728"3600
TXT"brevo-code:220b8a69985eb30bd461b6a0fd7a89eb"3600
TXT"brevo-code:279b408d579a764bf658c6104ff3a856"3600
TXT"brevo-code:55c89a34669d61c0ad5e5344edbf1aa3"3600
TXT"brevo-code:898360c0952ece3f633ecff50142dc18"3600
TXT"brevo-code:946237d164f25f80ba5b03e878e98df1"3600
TXT"brevo-code:c1969efae0898890d847e15847a4f655"3600
TXT"brevo-code:d59d1dcac8c54d7da8e978a26a108c4d"3600
TXT"sendinblue-code:1767297810cb60cfce98a6bc3982a983"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, MX 1h, NS 10m. The NS TTL at the parent is 1d and in the zone 10m; 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