hs-rm.de

Checked 21 October 2026, 22:51 UTC · via 8.8.8.8
!Passed with warnings
21 passed 2 warnings 0 failed 6 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-1d.itc.hs-rm.de, dns-1k.itc.hs-rm.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
dns-1d.itc.hs-rm.de, dns-1k.itc.hs-rm.de
NS in the zone
dns-1d.itc.hs-rm.de, dns-1k.itc.hs-rm.de
NameserverAddressesNetwork (AS)Glue
dns-1d.itc.hs-rm.de82.195.72.244AS8365 MANDA - Man-da.de GmbH, DE82.195.72.244
dns-1k.itc.hs-rm.de195.72.102.129AS50595 Hochschule-RheinMain - Hochschule RheinMain, DE195.72.102.129

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: dns-1d.itc.hs-rm.de, dns-1k.itc.hs-rm.de.
    #6
  • ✓ 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: dns-1d.itc.hs-rm.de, dns-1k.itc.hs-rm.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 0 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS50595 (Hochschule-RheinMain - Hochschule RheinMain, DE): 1 address; AS8365 (MANDA - Man-da.de GmbH, DE): 1 address.
  • 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

info

2 of 2 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns-1d.itc.hs-rm.de 82.195.72.244NOERROR, 5 ms, authoritativenoyes / yesrefusednot currently available
dns-1k.itc.hs-rm.de 195.72.102.129NOERROR, 5 ms, authoritativenoyes / yesrefusednot currently available

Checks

  • ✓ All respond #14
    All 2 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-1d.itc.hs-rm.de: "not currently available"; dns-1k.itc.hs-rm.de: "not currently available".
    #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 2026102101 · primary dns-1k.itc.hs-rm.de

Found

Primary (MNAME)
dns-1k.itc.hs-rm.de
Contact (RNAME)
hostmaster.hs-rm.de
Serial
2026102101
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
7200 s

Serial per nameserver

NameserverSerial
dns-1d.itc.hs-rm.de (82.195.72.244)2026102101
dns-1k.itc.hs-rm.de (195.72.102.129)2026102101

Checks

  • ✓ Serial 2026102101 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 7d, negative TTL 2h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns-1k.itc.hs-rm.de is one of the listed nameservers.
  • ✓ Contact hostmaster@hs-rm.de #25
    The SOA RNAME hostmaster.hs-rm.de means hostmaster@hs-rm.de.
  • ✓ Date-based serial #26
    The serial 2026102101 follows the YYYYMMDDnn convention (2026-10-21).

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
82.195.72.244:53
TypeValueTTL
SOAdns-1k.itc.hs-rm.de. hostmaster.hs-rm.de. 2026102101 28800 7200 604800 720086400
NSdns-1d.itc.hs-rm.de.86400
NSdns-1k.itc.hs-rm.de.86400
A195.72.103.28300
MX10 mxin-3rz.itmz.hs-rm.de.300
MX10 mxin-4rz.itmz.hs-rm.de.300
TXT"miro-verification=526a21ac7ead002146f9ec3b00574a006d16cef6"86400
TXT"ZOOM_verify_gO4N9Va3yDzVsn7VPuJdgd"86400
TXT"HARICA-HEj1cv3cSZ4mJrkj4h2"86400
TXT"google-site-verification=3Cp5yBQfQ9wzQdevsSaDnzFns4OjS3netx_Eth8GYpg"86400
TXT"v=spf1 mx a:mxin-3rz.itmz.hs-rm.de a:mxin-4rz.itmz.hs-rm.de a:mxout-3rz.itmz.hs-rm.de a:mxout-4rz.itmz.hs-rm.de ip4:195.72.103.56 ip4:195.72.103.57 ip4:195.72.103.58 ip4:195.72.103.59 include:h-da.de include:spf.nl2go.com ~all"86400

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 5m, 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