bvf.de

Checked 21 October 2026, 22:00 UTC · via 8.8.8.8
!Passed with warnings
23 passed 2 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

ns01.14v.de, ns02.14v.de, ns03.14v.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns01.14v.de, ns02.14v.de, ns03.14v.de
NS in the zone
ns01.14v.de, ns02.14v.de, ns03.14v.de
NameserverAddressesNetwork (AS)Glue
ns01.14v.de212.82.32.41 2a04:6c0:4:45::1AS9067 UNSPECIFIED - one4vision GmbH, DE AS9067 UNSPECIFIED - one4vision GmbH, DE212.82.32.41 2a04:6c0:4:45::1
ns02.14v.de31.220.95.63 2a02:c207:3017:1426::1AS51167 CONTABO - Contabo GmbH, DE AS51167 CONTABO - Contabo GmbH, DE31.220.95.63 2a02:c207:3017:1426::1
ns03.14v.de194.59.205.187 2a03:4000:34:d3c:7816:82ff:fe50:ba11AS197540 netcup-AS - netcup GmbH, DE AS197540 netcup-AS - netcup GmbH, DE194.59.205.187 2a03:4000:34:d3c:7816:82ff:fe50:ba11

Checks

  • ✓ 3 nameservers #6
    Delegated to ns01.14v.de, ns02.14v.de, ns03.14v.de.
  • ✓ 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 3 IPv6 /48s.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS197540 (netcup-AS - netcup GmbH, DE): 2 addresses; AS51167 (CONTABO - Contabo GmbH, DE): 2 addresses; AS9067 (UNSPECIFIED - one4vision GmbH, DE): 2 addresses.
  • 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
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

warn

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns01.14v.de 212.82.32.41NOERROR, 8 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.8.3
ns01.14v.de 2a04:6c0:4:45::1NOERROR, 8 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.8.3
ns02.14v.de 31.220.95.63NOERROR, 135 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.8.3
ns02.14v.de 2a02:c207:3017:1426::1NOERROR, 136 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.8.3
ns03.14v.de 194.59.205.187NOERROR, 0 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.8.3
ns03.14v.de 2a03:4000:34:d3c:7816:82ff:fe50:ba11NOERROR, 0 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.8.3

Checks

  • ✓ All respond #14
    All 6 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: ns01.14v.de: "PowerDNS Authoritative Server 4.8.3"; ns02.14v.de: "PowerDNS Authoritative Server 4.8.3"; ns03.14v.de: "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 2025141109 · primary ns01.14v.de

Found

Primary (MNAME)
ns01.14v.de
Contact (RNAME)
hostmaster.one4vision.de
Serial
2025141109
Refresh / retry
7200 s / 3600 s
Expire
1209600 s
Negative TTL
600 s

Serial per nameserver

NameserverSerial
ns01.14v.de (212.82.32.41)2025141109
ns01.14v.de (2a04:6c0:4:45::1)2025141109
ns02.14v.de (31.220.95.63)2025141109
ns02.14v.de (2a02:c207:3017:1426::1)2025141109
ns03.14v.de (194.59.205.187)2025141109
ns03.14v.de (2a03:4000:34:d3c:7816:82ff:fe50:ba11)2025141109

Checks

  • ✓ Serial 2025141109 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 1h, expire 14d, negative TTL 10m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns01.14v.de is one of the listed nameservers.
  • ✓ Contact hostmaster@one4vision.de #25
    The SOA RNAME hostmaster.one4vision.de means hostmaster@one4vision.de.
  • ✓ Timestamp serial #26
    The serial 2025141109 is a Unix timestamp (2034-03-05 03:11 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

info

12 records at the apex

Found

Read from
212.82.32.41:53
TypeValueTTL
SOAns01.14v.de. hostmaster.one4vision.de. 2025141109 7200 3600 1209600 600600
NSns03.14v.de.600
NSns01.14v.de.600
NSns02.14v.de.600
A195.30.108.82600
MX50 mail2.bvf.de.600
MX20 mail.bvf.de.600
TXT"MS=DA22C1A637C9E97DBDB946F389504F49DF05FA0A"600
TXT"v=spf1 mx ip4:212.82.33.143 ip6:2a04:6c0:1c:1::1 a include:spf.crsend.com ~all"600
TXT"swisssign-check=Pmz_LEYnXZX1Kqw82OcemKm0kNw"600
TXT"swisssign-check=drj1063qt5tjjXr6h1oWFsmzzz0"600
TXT"_7c7yk8kfwe5af7007z70bzh3yj5joy6"600

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, MX 10m, 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.
  • ✓ 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