forschungsgruppe.de

Checked 21 October 2026, 22:30 UTC · via 8.8.8.8
!Passed with warnings
20 passed 3 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

ns.brave.de, ns2.brave.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns.brave.de, ns2.brave.de
NS in the zone
ns.brave.de, ns2.brave.de
NameserverAddressesNetwork (AS)Glue
ns.brave.de213.145.64.2AS13115 HOME-OF-THE-BRAVE - Home of the Brave Internet Technology Based Solutions GmbH, DE213.145.64.2
ns2.brave.de213.145.80.4AS13115 HOME-OF-THE-BRAVE - Home of the Brave Internet Technology Based Solutions GmbH, DE213.145.80.4

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns.brave.de, ns2.brave.de.
    #6
  • ✓ 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 2 IPv4 /24s and 0 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS13115 (HOME-OF-THE-BRAVE - Home of the Brave Internet Technology Based Solutions GmbH, DE): 2 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

2 of 2 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns.brave.de 213.145.64.2NOERROR, 8 ms, authoritativenoyes / yesrefused1.0
ns2.brave.de 213.145.80.4NOERROR, 6 ms, authoritativenoyes / yesrefused1.0

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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns.brave.de: "1.0"; ns2.brave.de: "1.0". 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 2026032601 · primary ns.brave.de

Found

Primary (MNAME)
ns.brave.de
Contact (RNAME)
hostmaster.brave.de
Serial
2026032601
Refresh / retry
43200 s / 7200 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns.brave.de (213.145.64.2)2026032601
ns2.brave.de (213.145.80.4)2026032601

Checks

  • ✓ Serial 2026032601 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 12h, retry 2h, expire 7d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns.brave.de is one of the listed nameservers.
  • ✓ Contact hostmaster@brave.de #25
    The SOA RNAME hostmaster.brave.de means hostmaster@brave.de.
  • ✓ Date-based serial #26
    The serial 2026032601 follows the YYYYMMDDnn convention (2026-03-26).

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
213.145.64.2:53
TypeValueTTL
SOAns.brave.de. hostmaster.brave.de. 2026032601 43200 7200 604800 8640086400
NSns.brave.de.86400
NSns2.brave.de.86400
A213.145.80.7386400
MX10 mx002.cloudeu.xion.oxcs.net.86400
MX10 mx004.cloudeu.xion.oxcs.net.86400
MX10 mx003.cloudeu.xion.oxcs.net.86400
MX10 mx001.cloudeu.xion.oxcs.net.86400
TXT"v=spf1 a:smtp.forschungsgruppe.de include:spf.cloudeu.xion.oxcs.net ~all"86400
TXT"fuago-site-verification=qGIc5bPbHVR5ysfS4yJz4PeMx1UlIi1KQRIKiZnTAu"86400
TXT"google-site-verification=MYXJIQHFVjnhr-saP3XOFmrr1kOllwk95QOD6YF37dQ"86400

Checks

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