bueromarkt-ag.de

Checked 21 October 2026, 22:00 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

cns1.bueromarkt-ag.de, cns2.bueromarkt-ag.de, cns3.bueromarkt-ag.de, cns4.bueromarkt-ag.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
cns1.bueromarkt-ag.de, cns2.bueromarkt-ag.de, cns3.bueromarkt-ag.de, cns4.bueromarkt-ag.de
NS in the zone
cns1.bueromarkt-ag.de, cns2.bueromarkt-ag.de, cns3.bueromarkt-ag.de, cns4.bueromarkt-ag.de
NameserverAddressesNetwork (AS)Glue
cns1.bueromarkt-ag.de185.136.96.118AS203391 CLOUDNSNET - Cloud DNS Ltd, BG185.136.96.118
cns2.bueromarkt-ag.de185.136.97.118AS203391 CLOUDNSNET - Cloud DNS Ltd, BG185.136.97.118
cns3.bueromarkt-ag.de185.136.98.118AS203391 CLOUDNSNET - Cloud DNS Ltd, BG185.136.98.118
cns4.bueromarkt-ag.de185.136.99.118AS203391 CLOUDNSNET - Cloud DNS Ltd, BG185.136.99.118

Checks

  • ✓ 4 nameservers #6
    Delegated to cns1.bueromarkt-ag.de, cns2.bueromarkt-ag.de, cns3.bueromarkt-ag.de, cns4.bueromarkt-ag.de.
  • ✓ 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: cns1.bueromarkt-ag.de, cns2.bueromarkt-ag.de, cns3.bueromarkt-ag.de, cns4.bueromarkt-ag.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 4 IPv4 /24s and 0 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS203391 (CLOUDNSNET - Cloud DNS Ltd, BG): 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
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

info

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
cns1.bueromarkt-ag.de 185.136.96.118NOERROR, 3 ms, authoritativenoyes / yesrefusedde3-3
cns2.bueromarkt-ag.de 185.136.97.118NOERROR, 3 ms, authoritativenoyes / yesrefusedde3-3
cns3.bueromarkt-ag.de 185.136.98.118NOERROR, 3 ms, authoritativenoyes / yesrefusedde3-3
cns4.bueromarkt-ag.de 185.136.99.118NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-3

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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: cns1.bueromarkt-ag.de: "de3-3"; cns2.bueromarkt-ag.de: "de3-3"; cns3.bueromarkt-ag.de: "de3-3"; cns4.bueromarkt-ag.de: "de3-3".
    #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 2026100209 · primary cns1.bueromarkt-ag.de

Found

Primary (MNAME)
cns1.bueromarkt-ag.de
Contact (RNAME)
dns.bueromarkt-ag.de
Serial
2026100209
Refresh / retry
7200 s / 1800 s
Expire
1209600 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
cns1.bueromarkt-ag.de (185.136.96.118)2026100209
cns2.bueromarkt-ag.de (185.136.97.118)2026100209
cns3.bueromarkt-ag.de (185.136.98.118)2026100209
cns4.bueromarkt-ag.de (185.136.99.118)2026100209

Checks

  • ✓ Serial 2026100209 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 30m, expire 14d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver cns1.bueromarkt-ag.de is one of the listed nameservers.
  • ✓ Contact dns@bueromarkt-ag.de #25
    The SOA RNAME dns.bueromarkt-ag.de means dns@bueromarkt-ag.de.
  • ✓ Date-based serial #26
    The serial 2026100209 follows the YYYYMMDDnn convention (2026-10-02).

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

warn

11 records at the apex

Found

Read from
185.136.96.118:53
TypeValueTTL
SOAcns1.bueromarkt-ag.de. dns.bueromarkt-ag.de. 2026100209 7200 1800 1209600 36003600
NScns4.bueromarkt-ag.de.900
NScns3.bueromarkt-ag.de.900
NScns1.bueromarkt-ag.de.900
NScns2.bueromarkt-ag.de.900
A45.223.163.13360
A45.223.183.13360
MX10 mail.bueromarkt-ag.de.600
TXT"v=spf1 mx ip4:84.19.166.0/27 ip4:82.119.187.160/29 ip4:94.134.205.192/28 include:spf.protection.outlook.com -all"60
TXT"globalsign-domain-verification=A2698716E30A9F30381A62EB7BCF0B8F"60
TXT"apple-domain-verification=KvLjJh4SU2X0r8PJ"60

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1d and in the zone 15m; resolvers may use either.
    #32
  • ✓ 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