ersatzmonitor.de

Checked 21 October 2026, 22:19 UTC · via 8.8.8.8
✗Problems found
18 passed 3 warnings 1 failed 7 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.kv-gmbh.de, ns2.kv-gmbh.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.kv-gmbh.de, ns2.kv-gmbh.de
NS in the zone
ns1.kv-gmbh.de, ns2.kv-gmbh.de
NameserverAddressesNetwork (AS)Glue
ns1.kv-gmbh.de78.46.40.158AS24940 HETZNER-AS - Hetzner Online GmbH, DE-
ns2.kv-gmbh.de46.4.20.15AS24940 HETZNER-AS - Hetzner Online GmbH, DE-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.kv-gmbh.de, ns2.kv-gmbh.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 (AS24940 (HETZNER-AS - Hetzner Online 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

fail

2 of 2 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.kv-gmbh.de 78.46.40.158NOERROR, 4 ms, authoritativenono / yesrefusedPowerDNS Authoritative Server 4.7.3
ns2.kv-gmbh.de 46.4.20.15NOERROR, 3 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.7.3

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: ns1.kv-gmbh.de: "PowerDNS Authoritative Server 4.7.3"; ns2.kv-gmbh.de: "PowerDNS Authoritative Server 4.7.3". Hide or replace the version string.
    #17
  • ✓ Zone transfers refused #18
    No nameserver allows a zone transfer to the public.
  • ✗
    No DNS over TCP
    DNS over TCP is required (RFC 7766); without it, large answers such as DNSSEC responses fail. Not answering over TCP: ns1.kv-gmbh.de (78.46.40.158): read tcp 46.225.38.91:45360->78.46.40.158:53: i/o timeout.
    #19
  • ✓ EDNS supported #20
    All nameservers support EDNS(0).
  • ✓ Public addresses #21
    All nameserver addresses are publicly routable.

SOA

pass

serial 2024010107 · primary ns1.kv-gmbh.de

Found

Primary (MNAME)
ns1.kv-gmbh.de
Contact (RNAME)
hostmaster.kv.de
Serial
2024010107
Refresh / retry
7200 s / 2400 s
Expire
1209600 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns1.kv-gmbh.de (78.46.40.158)2024010107
ns2.kv-gmbh.de (46.4.20.15)2024010107

Checks

  • ✓ Serial 2024010107 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 40m, expire 14d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.kv-gmbh.de is one of the listed nameservers.
  • ✓ Contact hostmaster@kv.de #25
    The SOA RNAME hostmaster.kv.de means hostmaster@kv.de.
  • ✓ Date-based serial #26
    The serial 2024010107 follows the YYYYMMDDnn convention (2024-01-01).

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

14 records at the apex

Found

Read from
78.46.40.158:53
TypeValueTTL
SOAns1.kv-gmbh.de. hostmaster.kv.de. 2024010107 7200 2400 1209600 36003600
NSns1.kv-gmbh.de.3600
NSns2.kv-gmbh.de.3600
A78.46.74.823600
MX10 parking6.kv.de.3600
TXT"d7fc976677194190b816d599c487872b"3600
TXT"8d3bfa91bd4e1ce5ecce7cae7518fd1b813e4112"3600
TXT"afternic-verification-RZ69zFdYqwbprh9z36NsMd"3600
TXT"10f1e24b13d18223c2ae5f694fe39483aa021ed6"3600
TXT"v=spf1 a:parking6.kv.de -all"3600
TXT"c3df79d5324c4e6263f0a865b4eaae0b.elitedomains.de"3600
TXT"nameshift=xx5wrt"3600
TXT"saw-market=a359b45c-d7c0-4eb3-9d59-33054c837e64"3600
TXT"4a120ae4-b424-4bbb-a4f5-7c972f1537ca"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, 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.
  • i
    Wildcard record
    A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.
    #34
  • 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