geoportal.de

Checked 21 October 2026, 22:40 UTC · via 8.8.8.8
!Passed with warnings
22 passed 2 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

info

dns-3.dfn.de, gate1-f.bkg.bund.de, gate1-l.bkg.bund.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
dns-3.dfn.de, gate1-f.bkg.bund.de, gate1-l.bkg.bund.de
NS in the zone
dns-3.dfn.de, gate1-f.bkg.bund.de, gate1-l.bkg.bund.de
NameserverAddressesNetwork (AS)Glue
dns-3.dfn.de193.174.75.58 2001:638:d:b103::1AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE-
gate1-f.bkg.bund.de141.74.33.2AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE-
gate1-l.bkg.bund.de141.74.17.2AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE-

Checks

  • ✓ 3 nameservers #6
    Delegated to dns-3.dfn.de, gate1-f.bkg.bund.de, gate1-l.bkg.bund.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 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): 4 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: gate1-f.bkg.bund.de, gate1-l.bkg.bund.de.
    #13

Nameservers

warn

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns-3.dfn.de 193.174.75.58NOERROR, 8 ms, authoritativenoyes / yesrefused0
dns-3.dfn.de 2001:638:d:b103::1NOERROR, 8 ms, authoritativenoyes / yesrefused0
gate1-f.bkg.bund.de 141.74.33.2NOERROR, 15 ms, authoritativenoyes / yesrefusedNSD 4.15.0
gate1-l.bkg.bund.de 141.74.17.2NOERROR, 11 ms, authoritativenoyes / yesrefusedNSD 4.8.0

Checks

  • ✓ All respond #14
    All 4 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: gate1-f.bkg.bund.de: "NSD 4.15.0"; gate1-l.bkg.bund.de: "NSD 4.8.0". 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 2013111965 · primary gate1-f.bkg.bund.de

Found

Primary (MNAME)
gate1-f.bkg.bund.de
Contact (RNAME)
hostmaster.bkg.bund.de
Serial
2013111965
Refresh / retry
1200 s / 120 s
Expire
604800 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
dns-3.dfn.de (193.174.75.58)2013111965
dns-3.dfn.de (2001:638:d:b103::1)2013111965
gate1-f.bkg.bund.de (141.74.33.2)2013111965
gate1-l.bkg.bund.de (141.74.17.2)2013111965

Checks

  • ✓ Serial 2013111965 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 20m, retry 2m, expire 7d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver gate1-f.bkg.bund.de is one of the listed nameservers.
  • ✓ Contact hostmaster@bkg.bund.de #25
    The SOA RNAME hostmaster.bkg.bund.de means hostmaster@bkg.bund.de.
  • ✓ Date-based serial #26
    The serial 2013111965 follows the YYYYMMDDnn convention (2013-11-19).

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

17 records at the apex

Found

Read from
193.174.75.58:53
TypeValueTTL
SOAgate1-f.bkg.bund.de. hostmaster.bkg.bund.de. 2013111965 1200 120 604800 36003600
NSdns-3.dfn.de.3600
NSgate1-f.bkg.bund.de.3600
NSgate1-l.bkg.bund.de.3600
A141.74.51.91300
MX10 gate2-f.bkg.bund.de.3600
TXT"google-site-verification=L9Wp9IiYaSOBsQVcaJfdi16oP08gXFw9-wYujt9S61I"3600
TXT"google-site-verification=L6pO0Q7-IeJ1SOIhPVCNkFwuN2weHXUpbX6--afXrJk"3600
TXT"HARICA-Oc5Z34K9mLVO5bQTsBi"3600
CAA0 issuewild "letsencrypt.org"3600
CAA0 issuewild "pki.dfn.de"3600
CAA0 issue "harica.gr"3600
CAA0 issuewild "sectigo.com"3600
CAA0 issue "pki.dfn.de"3600
CAA0 issuewild "harica.gr"3600
CAA0 issue "sectigo.com"3600
CAA0 issue "letsencrypt.org"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 1h, NS 1h. The NS TTL at the parent is 1d and in the zone 1h; 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: letsencrypt.org, pki.dfn.de, harica.gr, sectigo.com.