uniklinikum-dresden.de

Checked 22 October 2026, 00:50 UTC · via 8.8.8.8
!Passed with warnings
21 passed 3 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

warn

dns.softed.de, ns.dsinet.de, ns2.dsinet.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
dns.softed.de, ns.dsinet.de, ns2.dsinet.de
NS in the zone
dns.softed.de, ns.dsinet.de, ns2.dsinet.de
NameserverAddressesNetwork (AS)Glue
dns.softed.de217.18.182.18AS16205 DSINET-ASN - DSI GmbH Daten Service Informationssysteme, DE217.18.182.18
ns.dsinet.de217.18.176.246AS16205 DSINET-ASN - DSI GmbH Daten Service Informationssysteme, DE217.18.176.246
ns2.dsinet.de178.249.27.6AS16205 DSINET-ASN - DSI GmbH Daten Service Informationssysteme, DE178.249.27.6

Checks

  • ✓ 3 nameservers #6
    Delegated to dns.softed.de, ns.dsinet.de, ns2.dsinet.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 0 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS16205 (DSINET-ASN - DSI GmbH Daten Service Informationssysteme, 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
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

warn

3 of 3 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns.softed.de 217.18.182.18NOERROR, 10 ms, authoritativenoyes / yesrefused-
ns.dsinet.de 217.18.176.246NOERROR, 10 ms, authoritativenoyes / yesrefused9.16.48-Ubuntu
ns2.dsinet.de 178.249.27.6NOERROR, 14 ms, authoritativenoyes / yesrefused9.18.33-1~deb12u2-Debian

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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns.dsinet.de: "9.16.48-Ubuntu"; ns2.dsinet.de: "9.18.33-1~deb12u2-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 2026101400 · primary dns.softed.de

Found

Primary (MNAME)
dns.softed.de
Contact (RNAME)
hostmaster.uniklinikum-dresden.de
Serial
2026101400
Refresh / retry
3600 s / 900 s
Expire
2419200 s
Negative TTL
7200 s

Serial per nameserver

NameserverSerial
dns.softed.de (217.18.182.18)2026101400
ns.dsinet.de (217.18.176.246)2026101400
ns2.dsinet.de (178.249.27.6)2026101400

Checks

  • ✓ Serial 2026101400 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 15m, expire 28d, negative TTL 2h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns.softed.de is one of the listed nameservers.
  • ✓ Contact hostmaster@uniklinikum-dresden.de #25
    The SOA RNAME hostmaster.uniklinikum-dresden.de means hostmaster@uniklinikum-dresden.de.
  • ✓ Date-based serial #26
    The serial 2026101400 follows the YYYYMMDDnn convention (2026-10-14).

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

21 records at the apex

Found

Read from
217.18.182.18:53
TypeValueTTL
SOAdns.softed.de. hostmaster.uniklinikum-dresden.de. 2026101400 3600 900 2419200 720086400
NSns.dsinet.de.86400
NSns2.dsinet.de.86400
NSdns.softed.de.86400
A141.76.248.3086400
MX10 mailin.uniklinikum-dresden.de.600
TXT"v=spf1 a:mailout.uniklinikum-dresden.de a:mailout2.uniklinikum-dresden.de ip4:141.76.248.101 ip4:141.76.248.102 include:_spf-dc55.sapsf.eu ~all"86400
TXT"jamf-site-verification=G8cA4c8j8j5CNImUKHy0nQ"86400
TXT"MS=ms10962227"86400
TXT"HARICA-ypni5BnqzXoJKqxBDOX"86400
TXT"bzsdcj1lubo7adwd7rp5nq4vkkvkrdjo"86400
TXT"cisco-ci-domain-verification=3a9ef054e71edbf6978a347b31a4b6b0a778b34691ed61d9af1c27c10d90e4ce"86400
TXT"apple-domain-verification=NQ7pnvZ3aJfvu0Ob"86400
TXT"google-site-verification=TeDvqIQMan9Co66H2ESSZwwujqJZU6XNF5EIFX-2K2A"86400
TXT"MS=9DA9D822F0ADCEB77EB6C5C5E04AA8866F5C9B0F"86400
TXT"successfactors-site-verification=MGI2NzE3NjU5ZWM3NTBiYjEyNzc5YjY3ODg4YmEzNTQyNGE1ZmUyZjQ1NTg5ZmY4ZDgxZGFjOGJhMDJmMTk3MA=="86400
TXT"1rzng6umpu9iop6c5lf2moivf37o8pyn"86400
TXT"cisco-ci-domain-verification=57b49542c873a5efa8287d5fbe34ce627b50b41198cc0e83ee42535e6241fd69"86400
TXT"HARICA-zhCPP7EkIn0mUKFgkgx"86400
TXT"sophos-domain-verification=d674a08b48751516b5698245a2c659b5cd51b64a1982d0c104e8f5e64c37ecc9"86400
TXT"swisssign-check=vY8dtmWC_NvQocVeTYTzjX70nHI"86400

Checks

  • ✓ TTLs within range #32
    TTLs: A 1d, MX 10m, 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