his.de

Checked 21 October 2026, 22:50 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

deneb.dfn.de, dns01.his.de, dns02.his.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
deneb.dfn.de, dns01.his.de, dns02.his.de
NS in the zone
deneb.dfn.de, dns01.his.de, dns02.his.de
NameserverAddressesNetwork (AS)Glue
deneb.dfn.de192.76.176.9 2001:638:800:1::9AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE-
dns01.his.de217.146.24.37AS42473 AS-ANEXIA - Anexia Cloud Solutions GmbH, AT217.146.24.37
dns02.his.de217.146.24.38AS42473 AS-ANEXIA - Anexia Cloud Solutions GmbH, AT217.146.24.38

Checks

  • ✓ 3 nameservers #6
    Delegated to deneb.dfn.de, dns01.his.de, dns02.his.de.
  • ✓ 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: dns01.his.de, dns02.his.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 2 IPv4 /24s and 1 IPv6 /48.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS42473 (AS-ANEXIA - Anexia Cloud Solutions GmbH, AT): 2 addresses; AS680 (DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., 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
  • i
    Partly IPv6
    These nameservers have no IPv6 address: dns01.his.de, dns02.his.de.
    #13

Nameservers

warn

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
deneb.dfn.de 192.76.176.9NOERROR, 14 ms, authoritativenoyes / yesrefused0
deneb.dfn.de 2001:638:800:1::9NOERROR, 14 ms, authoritativenoyes / yesrefused0
dns01.his.de 217.146.24.37NOERROR, 3 ms, authoritativenoyes / yesrefused9.20.29-1~deb13u1-Debian
dns02.his.de 217.146.24.38NOERROR, 3 ms, authoritativenoyes / yesrefused9.20.29-1~deb13u1-Debian

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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: dns01.his.de: "9.20.29-1~deb13u1-Debian"; dns02.his.de: "9.20.29-1~deb13u1-Debian". 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 2026100501 · primary dns01.his.de

Found

Primary (MNAME)
dns01.his.de
Contact (RNAME)
root.his.de
Serial
2026100501
Refresh / retry
86400 s / 28800 s
Expire
2592000 s
Negative TTL
43200 s

Serial per nameserver

NameserverSerial
deneb.dfn.de (192.76.176.9)2026100501
deneb.dfn.de (2001:638:800:1::9)2026100501
dns01.his.de (217.146.24.37)2026100501
dns02.his.de (217.146.24.38)2026100501

Checks

  • ✓ Serial 2026100501 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1d, retry 8h, expire 30d, negative TTL 12h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns01.his.de is one of the listed nameservers.
  • ✓ Contact root@his.de #25
    The SOA RNAME root.his.de means root@his.de.
  • ✓ Date-based serial #26
    The serial 2026100501 follows the YYYYMMDDnn convention (2026-10-05).

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

11 records at the apex

Found

Read from
192.76.176.9:53
TypeValueTTL
SOAdns01.his.de. root.his.de. 2026100501 86400 28800 2592000 4320086400
NSdeneb.dfn.de.86400
NSdns01.his.de.86400
NSdns02.his.de.86400
A217.146.24.4886400
MX0 his-de.mail.protection.outlook.com.86400
TXT"HARICA-XnOCXdvWp4NUmdtvvtt"3600
TXT"adobe-idp-site-verification=1b896087aa5eb5feec14771a967d1ec795310803d1e9b7ba7de74fabd879ce68"3600
TXT"v=spf1 include:spf.protection.outlook.com ip4:217.146.24.39 ip4:217.146.24.41 ip4:217.146.24.48 ip4:192.168.9.180 include:_spf.vision-connect.de ~all"3600
TXT"MS=ms64636936"3600
TXT"figma-domain-verification=d3a790790049c5862e08819e6e9e74bec0fbdef7afe13882e931d0c1eada3c02-1791195614"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1d, 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.
  • 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