jade-hs.de

Checked 21 October 2026, 23:01 UTC · via 8.8.8.8
!Passed with warnings
20 passed 1 warning 0 failed 8 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-2.dfn.de, glob-ipam1.hs-woe.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
dns-2.dfn.de, glob-ipam1.hs-woe.de
NS in the zone
dns-2.dfn.de, glob-ipam1.hs-woe.de
NameserverAddressesNetwork (AS)Glue
dns-2.dfn.de193.174.75.54 2001:638:d:b102::1AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE-
glob-ipam1.hs-woe.de139.13.250.66AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE139.13.250.66

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: dns-2.dfn.de, glob-ipam1.hs-woe.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 1 IPv6 /48.
  • 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): 3 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: glob-ipam1.hs-woe.de.
    #13

Nameservers

info

3 of 3 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns-2.dfn.de 193.174.75.54NOERROR, 8 ms, authoritativenoyes / yesrefused0
dns-2.dfn.de 2001:638:d:b102::1NOERROR, 7 ms, authoritativenoyes / yesrefused0
glob-ipam1.hs-woe.de 139.13.250.66NOERROR, 23 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 3 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: dns-2.dfn.de: "0".
    #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 2010097074 · primary glob-ipam1.hs-woe.de

Found

Primary (MNAME)
glob-ipam1.hs-woe.de
Contact (RNAME)
postmaster.hs-woe.de
Serial
2010097074
Refresh / retry
10800 s / 3600 s
Expire
2419200 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
dns-2.dfn.de (193.174.75.54)2010097074
dns-2.dfn.de (2001:638:d:b102::1)2010097074
glob-ipam1.hs-woe.de (139.13.250.66)2010097074

Checks

  • ✓ Serial 2010097074 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 28d, negative TTL 15m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver glob-ipam1.hs-woe.de is one of the listed nameservers.
  • ✓ Contact postmaster@hs-woe.de #25
    The SOA RNAME postmaster.hs-woe.de means postmaster@hs-woe.de.
  • ✓ Timestamp serial #26
    The serial 2010097074 is a Unix timestamp (2033-09-12 00:17 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

14 records at the apex

Found

Read from
193.174.75.54:53
TypeValueTTL
SOAglob-ipam1.hs-woe.de. postmaster.hs-woe.de. 2010097074 10800 3600 2419200 90028800
NSdns-2.dfn.de.28800
NSglob-ipam1.hs-woe.de.28800
A139.13.250.11528800
MX10 mx-01-eu-central-1.prod.hydra.sophos.com.86400
MX20 mx-02-eu-central-1.prod.hydra.sophos.com.86400
TXT"cisco-ci-domain-verification=53f6a292e543dc039b9e3ada0f3ad1b95c728de64146e55eddaa230005c18e9b"3600
TXT"v=spf1 ip4:116.203.110.13 ip4:159.69.3.23 include:_spf.hs-woe.de -all"3600
TXT"sophos-domain-verification=17ee49292f92b158eb0c0efff62953719fcd6cb8"3600
TXT"ZOOM_verify_C5WqgicFTG6C2dNKthbUSQ"3600
TXT"MS=ms44812271"3600
TXT"adobe-idp-site-verification=cada7768693c8016991b79be1767c965b24663880f50e0bf087fa63c7bddb317"3600
TXT"domainVerification=4e646ad4-b6fa-4e22-a4c1-4e568a8289aa"3600
TXT"sophos-domain-verification=1d7c0e09e55a42a9148f53c69370c8f3c553640d0dc0dae4dd57710b99e1dde8"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 8h, MX 1d, NS 8h. The NS TTL at the parent is 1d and in the zone 8h; 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