hs-anhalt.de

Checked 21 October 2026, 22:51 UTC · via 8.8.8.8
!Passed with warnings
20 passed 2 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

info

dns-1.dfn.de, dns-3.dfn.de, hermes.hs-anhalt.de, nskt.zik.hs-anhalt.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
dns-1.dfn.de, dns-3.dfn.de, hermes.hs-anhalt.de, nskt.zik.hs-anhalt.de
NS in the zone
dns-1.dfn.de, dns-3.dfn.de, hermes.hs-anhalt.de, nskt.zik.hs-anhalt.de
NameserverAddressesNetwork (AS)Glue
dns-1.dfn.de193.174.75.50 2001:638:d:b101::1AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE-
dns-3.dfn.de193.174.75.58 2001:638:d:b103::1AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE-
hermes.hs-anhalt.de192.108.32.1AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE192.108.32.1
nskt.zik.hs-anhalt.de192.108.32.10AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE192.108.32.10

Checks

  • ✓ 4 nameservers #6
    Delegated to dns-1.dfn.de, dns-3.dfn.de, hermes.hs-anhalt.de, nskt.zik.hs-anhalt.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: hermes.hs-anhalt.de, nskt.zik.hs-anhalt.de.
  • ✓ All names resolve #9
    Every nameserver name has an address and is not an alias.
  • i
    One address family in one network
    all IPv6 addresses are in 2001:638:d::/48, while the other address family is spread over several networks.
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS680 (DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE): 6 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
  • i
    Partly IPv6
    These nameservers have no IPv6 address: hermes.hs-anhalt.de, nskt.zik.hs-anhalt.de.
    #13

Nameservers

warn

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns-1.dfn.de 193.174.75.50NOERROR, 14 ms, authoritativenoyes / yesrefused0
dns-1.dfn.de 2001:638:d:b101::1NOERROR, 15 ms, authoritativenoyes / yesrefused0
dns-3.dfn.de 193.174.75.58NOERROR, 8 ms, authoritativenoyes / yesrefused0
dns-3.dfn.de 2001:638:d:b103::1NOERROR, 9 ms, authoritativenoyes / yesrefused0
hermes.hs-anhalt.de 192.108.32.1NOERROR, 16 ms, authoritativenoyes / yesrefused9.18.30-0ubuntu0.20.04.2-Ubuntu
nskt.zik.hs-anhalt.de 192.108.32.10NOERROR, 14 ms, authoritativenoyes / yesrefused9.18.30-0ubuntu0.20.04.2-Ubuntu

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: hermes.hs-anhalt.de: "9.18.30-0ubuntu0.20.04.2-Ubuntu"; nskt.zik.hs-anhalt.de: "9.18.30-0ubuntu0.20.04.2-Ubuntu". 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 2026091701 · primary hermes.hs-anhalt.de

Found

Primary (MNAME)
hermes.hs-anhalt.de
Contact (RNAME)
hostmaster.hs-anhalt.de
Serial
2026091701
Refresh / retry
14400 s / 3600 s
Expire
2419200 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
dns-1.dfn.de (193.174.75.50)2026091701
dns-1.dfn.de (2001:638:d:b101::1)2026091701
dns-3.dfn.de (193.174.75.58)2026091701
dns-3.dfn.de (2001:638:d:b103::1)2026091701
hermes.hs-anhalt.de (192.108.32.1)2026091701
nskt.zik.hs-anhalt.de (192.108.32.10)2026091701

Checks

  • ✓ Serial 2026091701 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 4h, retry 1h, expire 28d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver hermes.hs-anhalt.de is one of the listed nameservers.
  • ✓ Contact hostmaster@hs-anhalt.de #25
    The SOA RNAME hostmaster.hs-anhalt.de means hostmaster@hs-anhalt.de.
  • ✓ Date-based serial #26
    The serial 2026091701 follows the YYYYMMDDnn convention (2026-09-17).

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

18 records at the apex

Found

Read from
193.174.75.50:53
TypeValueTTL
SOAhermes.hs-anhalt.de. hostmaster.hs-anhalt.de. 2026091701 14400 3600 2419200 36003600
NSdns-1.dfn.de.3600
NSdns-3.dfn.de.3600
NShermes.hs-anhalt.de.3600
NSnskt.zik.hs-anhalt.de.3600
A185.243.132.1573600
MX10 c1441.mx.srv.dfn.de.3600
MX10 b1441.mx.srv.dfn.de.3600
MX10 a1441.mx.srv.dfn.de.3600
TXT"cisco-ci-domain-verification=609824e093aedbf68e2ff051db5d85ae187e0bbebe7cce90582a5dca815c0693"3600
TXT"MS=ms46013319"3600
TXT"HARICA-JaGG50WOhQSOQaii1Zz"3600
TXT"apple-domain-verification=4082yZPLqdb8ZbMr"3600
TXT"v=spf1 ip4:51.89.73.208/28 ip4:147.135.249.48/28 ip4:54.37.79.226/32 include:spf.mailsupport.dfn.de include:spf.mailjet.com ~all"3600
TXT"MS=9A5A6362EC953956B61EA96B248755973B32930C"3600
TXT"google-site-verification=p3FBYXIfphSnV0n9ZNAQH4F1XqNgukfkbYDvRrmgaWo"3600
TXT"adobe-idp-site-verification=63c7c1ae9136f38686c18323e85dbe646affd066065043fad1b2af3c71dd221d"3600
TXT"google-site-verification=Ley1q7HoSRSk5Itk5rQUMJ-aU_XXCFX_pTxe7LkKNjQ"3600

Checks

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