organspende-info.de

Checked 21 October 2026, 23:42 UTC · via 8.8.8.8
✗Problems found
21 passed 4 warnings 1 failed 3 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

ns1.dimdi.de, sif.komtel.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.dimdi.de, sif.komtel.net
NS in the zone
ns03.versatel.de, ns1.dimdi.de, ns2.dimdi.de
NameserverAddressesNetwork (AS)Glue
ns03.versatel.de (zone only)193.219.15.17AS8881 VERSATEL - 1&1 Versatel GmbH, DE-
ns1.dimdi.de194.153.219.2AS6733 BfArM - Bundesinstitut fuer Arzneimittel und Medizinprodukte (BfArM), DE194.153.219.2
ns2.dimdi.de (zone only)194.153.219.22AS6733 BfArM - Bundesinstitut fuer Arzneimittel und Medizinprodukte (BfArM), DE-
sif.komtel.net (parent only)212.7.128.165AS8881 VERSATEL - 1&1 Versatel GmbH, DE-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.dimdi.de, sif.komtel.net.
    #6
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only at the parent: sif.komtel.net; only in the zone: ns03.versatel.de, ns2.dimdi.de. ns1.dimdi.de, ns2.dimdi.de, sif.komtel.net report NS ns03.versatel.de ns1.dimdi.de ns2.dimdi.de.
    #7
  • ✓ 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.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS6733 (BfArM - Bundesinstitut fuer Arzneimittel und Medizinprodukte (BfArM), DE): 2 addresses; AS8881 (VERSATEL - 1&1 Versatel GmbH, DE): 2 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .de, .net.
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

fail

3 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns03.versatel.de 193.219.15.17NOERROR, 12 ms, NOT authoritativenoyes / yesrefusedNo version info available (refused).
ns1.dimdi.de 194.153.219.2NOERROR, 8 ms, authoritativenoyes / yesrefused9.18.49-1~deb12u2-Debian
ns2.dimdi.de 194.153.219.22NOERROR, 8 ms, authoritativenoyes / yesrefused9.18.49-1~deb12u2-Debian
sif.komtel.net 212.7.128.165NOERROR, 17 ms, authoritativenoyes / yesrefusedNo version info available (refused).

Checks

  • ✓ All respond #14
    All 4 nameserver addresses answered.
  • ✗
    Lame delegation
    These nameservers don't answer authoritatively for the zone, so resolvers ignore them: ns03.versatel.de (193.219.15.17): NOERROR, authoritative=false.
    #15
  • ✓ 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: ns1.dimdi.de: "9.18.49-1~deb12u2-Debian"; ns2.dimdi.de: "9.18.49-1~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 2026082000 · primary ns1.dimdi.de

Found

Primary (MNAME)
ns1.dimdi.de
Contact (RNAME)
hostmaster.bfarm.de
Serial
2026082000
Refresh / retry
10800 s / 3600 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.dimdi.de (194.153.219.2)2026082000
ns2.dimdi.de (194.153.219.22)2026082000
sif.komtel.net (212.7.128.165)2026082000

Checks

  • ✓ Serial 2026082000 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 7d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.dimdi.de is one of the listed nameservers.
  • ✓ Contact hostmaster@bfarm.de #25
    The SOA RNAME hostmaster.bfarm.de means hostmaster@bfarm.de.
  • ✓ Date-based serial #26
    The serial 2026082000 follows the YYYYMMDDnn convention (2026-08-20).

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

pass

14 records at the apex

Found

Read from
194.153.219.2:53
TypeValueTTL
SOAns1.dimdi.de. hostmaster.bfarm.de. 2026082000 10800 3600 604800 8640010800
NSns03.versatel.de.10800
NSns1.dimdi.de.10800
NSns2.dimdi.de.10800
A195.252.136.6010800
MX10 srv03mailgw.dimdi.de.10800
MX10 srv04mailgw.dimdi.de.10800
TXT"v=spf1 include:_spf.bioeg.de include:_spf1.bund.de -all"10800
TXT"HARICA-udPfxLZJKFoozx0Yt7Y"10800
TXT"HARICA-3OfRWjUPNFNOaWHbAYH"10800
TXT"HARICA-OqWYWb9eJ4U5ut4jVKW"10800
CAA0 iodef "mailto:IT-Sicherheitsmanagement@bfarm.de"10800
CAA0 issue "sectigo.com"10800
CAA0 issue "harica.gr"10800

Checks

  • ✓ TTLs within range #32
    TTLs: A 3h, MX 3h, NS 3h. The NS TTL at the parent is 1d and in the zone 3h; 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: sectigo.com, harica.gr.