h-da.de

Checked 21 October 2026, 22:41 UTC · via 8.8.8.8
!Passed with warnings
23 passed 2 warnings 0 failed 4 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

minos.itda.h-da.de, ns2.h-da.cloud, sylt.itda.h-da.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
minos.itda.h-da.de, ns2.h-da.cloud, sylt.itda.h-da.de
NS in the zone
minos.itda.h-da.de, ns2.h-da.cloud, sylt.itda.h-da.de
NameserverAddressesNetwork (AS)Glue
minos.itda.h-da.de141.100.10.113 2001:67c:2184:fdfe::113AS8365 MANDA - Man-da.de GmbH, DE AS8365 MANDA - Man-da.de GmbH, DE141.100.10.113 2001:67c:2184:fdfe::113
ns2.h-da.cloud141.100.225.2 2001:67c:295c:1000:3795:b54c:5ba6:2df5AS8365 MANDA - Man-da.de GmbH, DE AS8365 MANDA - Man-da.de GmbH, DE-
sylt.itda.h-da.de141.100.10.110 2001:67c:2184:fdfe::110AS8365 MANDA - Man-da.de GmbH, DE AS8365 MANDA - Man-da.de GmbH, DE141.100.10.110 2001:67c:2184:fdfe::110

Checks

  • ✓ 3 nameservers #6
    Delegated to minos.itda.h-da.de, ns2.h-da.cloud, sylt.itda.h-da.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: minos.itda.h-da.de, sylt.itda.h-da.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 2 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS8365 (MANDA - Man-da.de GmbH, 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
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .cloud, .de.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

warn

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
minos.itda.h-da.de 141.100.10.113NOERROR, 6 ms, authoritativenoyes / yesrefusedbind9.sylt.itda.h-da.de
minos.itda.h-da.de 2001:67c:2184:fdfe::113NOERROR, 6 ms, authoritativenoyes / yesrefusedbind9.sylt.itda.h-da.de
ns2.h-da.cloud 141.100.225.2NOERROR, 4 ms, authoritativenoyes / yesrefusedNSD 4.15.3
ns2.h-da.cloud 2001:67c:295c:1000:3795:b54c:5ba6:2df5NOERROR, 5 ms, authoritativenoyes / yesrefusedNSD 4.15.3
sylt.itda.h-da.de 141.100.10.110NOERROR, 5 ms, authoritativenoyes / yesrefusedbind9.sylt.itda.h-da.de
sylt.itda.h-da.de 2001:67c:2184:fdfe::110NOERROR, 5 ms, authoritativenoyes / yesrefusedbind9.sylt.itda.h-da.de

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: ns2.h-da.cloud: "NSD 4.15.3". 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 2026102001 · primary sylt.itda.h-da.de

Found

Primary (MNAME)
sylt.itda.h-da.de
Contact (RNAME)
it-service.h-da.de
Serial
2026102001
Refresh / retry
7200 s / 1800 s
Expire
604800 s
Negative TTL
7200 s

Serial per nameserver

NameserverSerial
minos.itda.h-da.de (141.100.10.113)2026102001
minos.itda.h-da.de (2001:67c:2184:fdfe::113)2026102001
ns2.h-da.cloud (141.100.225.2)2026102001
ns2.h-da.cloud (2001:67c:295c:1000:3795:b54c:5ba6:2df5)2026102001
sylt.itda.h-da.de (141.100.10.110)2026102001
sylt.itda.h-da.de (2001:67c:2184:fdfe::110)2026102001

Checks

  • ✓ Serial 2026102001 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 30m, expire 7d, negative TTL 2h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver sylt.itda.h-da.de is one of the listed nameservers.
  • ✓ Contact it-service@h-da.de #25
    The SOA RNAME it-service.h-da.de means it-service@h-da.de.
  • ✓ Date-based serial #26
    The serial 2026102001 follows the YYYYMMDDnn convention (2026-10-20).

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

16 records at the apex

Found

Read from
141.100.10.113:53
TypeValueTTL
SOAsylt.itda.h-da.de. it-service.h-da.de. 2026102001 7200 1800 604800 72007200
NSns2.h-da.cloud.7200
NSsylt.itda.h-da.de.7200
NSminos.itda.h-da.de.7200
A141.100.10.1117200
AAAA2001:67c:2184:fdfe::1117200
MX10 ironmanv.h-da.de.7200
MX10 ironboyv.h-da.de.7200
TXT"adobe-idp-site-verification=61c6997be6679875173b3a02d4aaa75902d17a6db2c90ec97393eb823474e9ce"7200
TXT"MS=ABCDF552148E22171ACB092B746D27801A3B6190"7200
TXT"projectdiscovery-verification=7fa7bd2979"7200
TXT"google-site-verification=dxb63bA7O8ACO0sTwKCWxzvhdlhaGJBZkun_6vJr7xs"7200
TXT"MS=ms87359289"7200
TXT"ZOOM_verify_Ew0v3iVcS6yQQidamOgXyw"7200
TXT"google-site-verification=0A9MvWveM670rTEGurwKY5u0W9ttthkuNf-yPpXGOws"7200
TXT"v=spf1 mx ip4:185.55.125.2 ip4:185.55.125.3 ip4:141.100.10.233 ip4:141.100.10.234 ip4:141.100.10.235 ip4:141.100.10.236" " ip6:2001:41b8:207:ffff::10:102 ip6:2001:41b8:207:ffff::10:103 ip6:2001:67c:2184:fdfe::10:233 ip6:2001:67c:2184:fdfe::10:234 ip6:2001:67c:2184:fdfe::10:235 ip6:2001:67c:2184:fdfe::10:236 -all"7200

Checks

  • ✓ TTLs within range #32
    TTLs: A 2h, AAAA 2h, MX 2h, NS 2h. The NS TTL at the parent is 1d and in the zone 2h; 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