statistik-berlin-brandenburg.de

Checked 22 October 2026, 00:30 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

info

ns.webmatic.de, ns2.slave-ns.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns.webmatic.de, ns2.slave-ns.de
NS in the zone
ns.webmatic.de, ns2.slave-ns.de
NameserverAddressesNetwork (AS)Glue
ns.webmatic.de185.184.215.11 2a02:238:f031::11AS16097 HLKOMM - HL komm Telekommunikations GmbH, DE AS16097 HLKOMM - HL komm Telekommunikations GmbH, DE185.184.215.11 2a02:238:f031::11
ns2.slave-ns.de213.128.134.241 2001:868:100:180::4AS12731 IPHH - IPHH Internet Port Hamburg GmbH, DE AS12731 IPHH - IPHH Internet Port Hamburg GmbH, DE-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns.webmatic.de, ns2.slave-ns.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 2 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS12731 (IPHH - IPHH Internet Port Hamburg GmbH, DE): 2 addresses; AS16097 (HLKOMM - HL komm Telekommunikations GmbH, DE): 2 addresses.
  • 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
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

warn

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns.webmatic.de 185.184.215.11NOERROR, 10 ms, authoritativenoyes / yesrefusedKnot DNS 3.6.2
ns.webmatic.de 2a02:238:f031::11NOERROR, 12 ms, authoritativenoyes / yesrefusedKnot DNS 3.6.2
ns2.slave-ns.de 213.128.134.241NOERROR, 13 ms, authoritativenoyes / yesrefused-
ns2.slave-ns.de 2001:868:100:180::4NOERROR, 13 ms, authoritativenoyes / yesrefused-

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: ns.webmatic.de: "Knot DNS 3.6.2". 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

info

serial 2026101301 · primary ns01.gisa.de

Found

Primary (MNAME)
ns01.gisa.de
Contact (RNAME)
denic.gisa.de
Serial
2026101301
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns.webmatic.de (185.184.215.11)2026101301
ns.webmatic.de (2a02:238:f031::11)2026101301
ns2.slave-ns.de (213.128.134.241)2026101301
ns2.slave-ns.de (2001:868:100:180::4)2026101301

Checks

  • ✓ Serial 2026101301 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 7d, negative TTL 1d.
  • i
    Hidden master
    The primary nameserver ns01.gisa.de is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.
    #24
  • ✓ Contact denic@gisa.de #25
    The SOA RNAME denic.gisa.de means denic@gisa.de.
  • ✓ Date-based serial #26
    The serial 2026101301 follows the YYYYMMDDnn convention (2026-10-13).

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

12 records at the apex

Found

Read from
185.184.215.11:53
TypeValueTTL
SOAns01.gisa.de. denic.gisa.de. 2026101301 28800 7200 604800 8640086400
NSns.webmatic.de.1800
NSns2.slave-ns.de.1800
A18.64.119.471800
A18.64.119.541800
A18.64.119.751800
A18.64.119.1171800
MX10 mx09.gisa.de.1800
MX20 mx10.gisa.de.1800
TXT"v=spf1 mx ip4:141.15.35.0/24 include:amazonses.com include:spf.gisa.de ~all"1800
TXT"_telesec-domain-validation=360686_2026-05-12_3ynCN0B7UTxZQjbFEVNrvm85VA1Sifu2FGjQqEYVmuDJUe8J0y"1800
TXT"_3a4162eb62cbe71c9bcf1a31294024a5 CNAME _442fe90aaf06becfa6a8969578ce5a8c.nfyddsqlcy.acm-validations.aws."1800

Checks

  • ✓ TTLs within range #32
    TTLs: A 30m, MX 30m, NS 30m. The NS TTL at the parent is 1d and in the zone 30m; 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