vhv.de

Checked 22 October 2026, 00:51 UTC · via 8.8.8.8
!Passed with warnings
22 passed 2 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

info

pns.dtag.de, secondary006.dtag.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
pns.dtag.de, secondary006.dtag.net
NS in the zone
pns.dtag.de, secondary006.dtag.net
NameserverAddressesNetwork (AS)Glue
pns.dtag.de194.25.0.125 2003:40:8000::100AS3320 DTAG - Deutsche Telekom AG, DE AS3320 DTAG - Deutsche Telekom AG, DE194.25.0.125 2003:40:8000::100
secondary006.dtag.net195.244.245.25 2a00:fa8:3:0:100:0:6:1AS5605 NETUSE - NetUSE AG, DE AS5605 NETUSE - NetUSE AG, DE-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: pns.dtag.de, secondary006.dtag.net.
    #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 2 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS3320 (DTAG - Deutsche Telekom AG, DE): 2 addresses; AS5605 (NETUSE - NetUSE AG, DE): 2 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .de, .net.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
pns.dtag.de 194.25.0.125NOERROR, 9 ms, authoritativenoyes / yesrefusedDomainNameServer
pns.dtag.de 2003:40:8000::100NOERROR, 10 ms, authoritativenoyes / yesrefusedDomainNameServer
secondary006.dtag.net 195.244.245.25NOERROR, 12 ms, authoritativenoyes / yesrefusedDomainNameServer
secondary006.dtag.net 2a00:fa8:3:0:100:0:6:1NOERROR, 17 ms, authoritativenoyes / yesrefusedDomainNameServer

Checks

  • ✓ All respond #14
    All 4 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: pns.dtag.de: "DomainNameServer"; secondary006.dtag.net: "DomainNameServer".
    #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

warn

serial 2026100202 · primary ns1.vhv.de

Found

Primary (MNAME)
ns1.vhv.de
Contact (RNAME)
hostmaster.vhv.de
Serial
2026100202
Refresh / retry
3600 s / 7200 s
Expire
2592000 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
pns.dtag.de (194.25.0.125)2026100202
pns.dtag.de (2003:40:8000::100)2026100202
secondary006.dtag.net (195.244.245.25)2026100202
secondary006.dtag.net (2a00:fa8:3:0:100:0:6:1)2026100202

Checks

  • ✓ Serial 2026100202 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    retry 2h should be shorter than refresh 1h. Current values: refresh 1h, retry 2h, expire 30d, negative TTL 1d.
    #23
  • i
    Hidden master
    The primary nameserver ns1.vhv.de is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.
    #24
  • ✓ Contact hostmaster@vhv.de #25
    The SOA RNAME hostmaster.vhv.de means hostmaster@vhv.de.
  • ✓ Date-based serial #26
    The serial 2026100202 follows the YYYYMMDDnn convention (2026-10-02).

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

pass

25 records at the apex

Found

Read from
194.25.0.125:53
TypeValueTTL
SOAns1.vhv.de. hostmaster.vhv.de. 2026100202 3600 7200 2592000 8640086400
NSpns.dtag.de.86400
NSsecondary006.dtag.net.86400
A195.192.131.23600
MX10 securemail.vhv.de.86400
MX5 email2.vhv.de.86400
MX5 email.vhv.de.86400
MX10 securemail2.vhv.de.86400
TXT"notion-domain-verification=chMz31iqHEZ6CWLkvvMrSXqUyv7rTAqiNLDtL0UeSOo"3600
TXT"Dynatrace-site-verification=9e67d120-93be-4e79-8424-01a37021f956__7uatog4hotnk9cp6p91v04v9gl"3600
TXT"teamviewer-sso-verification=60f142915cb2465693db187a28ede57d"3600
TXT"MS=ms99976822"3600
TXT"google-site-verification=VxtGc3T2IfzoZhu-39j9MoVdXr6tUU6ZlU4Qho0bTwM"3600
TXT"c4Q7IvUCLtu+yVb1LdIM1BHLx8oR0K8/JObAIW8oFRl/m3WeuKy5AVvyT5CWmgRdGRJQ4yfYzFRNBJkFtZai4A=="3600
TXT"v=spf1 include:spf-a.vhv.de -all"3600
TXT"google-gws-recovery-domain-verification=47640623"3600
TXT"zOYiDmM2oTLdVf5+G7NJvDRcKFk/w49QPoiN9X62FwA+6j1yMyHqQV72pVaszBJLIhOlJE7By9QQRjlEdM88Pw"3600
TXT"google-site-verification=5SLXT_DdIeXhH2wKFok5Nn4ySL8bGPO5oVsGu1iit0I"3600
TXT"canva-site-verification=YriKrxplXQdVDzd9gvZ2VA"3600
TXT"google-site-verification=LGqCJDEJrA8bQsOpHAen2YlNG6F0yGfpMu_kv5zUh-A"3600
TXT"mentimeter-38160d88-03d7-44ae-9e8b-e4c43c88f2d6"3600
TXT"atlassian-domain-verification=EiyaZOpnZxaFjlL4xME3e8uamKPacHU/bENnGVo78TxavtVtnrFOQalnAqQ5CbRJ"3600
CAA0 issue "www.digicert.com"86400
CAA0 issue "telesec.de"86400
CAA0 issue "letsencrypt.org"86400

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, MX 1d, NS 1d.
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: www.digicert.com, telesec.de, letsencrypt.org.