bildungsklick.de

Checked 21 October 2026, 21:40 UTC · via 8.8.8.8
!Passed with warnings
23 passed 1 warning 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

ns1.timmehosting.de, ns2.timmehosting.de, ns3.timmehosting.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.timmehosting.de, ns2.timmehosting.de, ns3.timmehosting.de
NS in the zone
ns1.timmehosting.de, ns2.timmehosting.de, ns3.timmehosting.de
NameserverAddressesNetwork (AS)Glue
ns1.timmehosting.de78.47.168.192 2a01:4f8:c17:89e2::1AS24940 HETZNER-AS - Hetzner Online GmbH, DE AS24940 HETZNER-AS - Hetzner Online GmbH, DE78.47.168.192 2a01:4f8:c17:89e2::1
ns2.timmehosting.de157.90.19.57 2a01:4f8:1c1e:b474::1AS24940 HETZNER-AS - Hetzner Online GmbH, DE AS24940 HETZNER-AS - Hetzner Online GmbH, DE157.90.19.57 2a01:4f8:1c1e:b474::1
ns3.timmehosting.de94.237.31.204 2a04:3542:1000:910:74b0:a6ff:feb3:4ad5AS202053 UPCLOUD - UpCloud Ltd, FI AS202053 UPCLOUD - UpCloud Ltd, FI94.237.31.204 2a04:3542:1000:910:74b0:a6ff:feb3:4ad5

Checks

  • ✓ 3 nameservers #6
    Delegated to ns1.timmehosting.de, ns2.timmehosting.de, ns3.timmehosting.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 3 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS202053 (UPCLOUD - UpCloud Ltd, FI): 2 addresses; AS24940 (HETZNER-AS - Hetzner Online GmbH, DE): 4 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

pass

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.timmehosting.de 78.47.168.192NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns1.timmehosting.de 2a01:4f8:c17:89e2::1NOERROR, 6 ms, authoritativenoyes / yesrefused-
ns2.timmehosting.de 157.90.19.57NOERROR, 0 ms, authoritativenoyes / yesrefused-
ns2.timmehosting.de 2a01:4f8:1c1e:b474::1NOERROR, 1 ms, authoritativenoyes / yesrefused-
ns3.timmehosting.de 94.237.31.204NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns3.timmehosting.de 2a04:3542:1000:910:74b0:a6ff:feb3:4ad5NOERROR, 4 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 6 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.
  • ✓ No version disclosed #17
    The nameservers don't reveal their software version.
  • ✓ 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 2026091802 · primary ns1.timmehosting.de

Found

Primary (MNAME)
ns1.timmehosting.de
Contact (RNAME)
zonemaster.timmehosting.de
Serial
2026091802
Refresh / retry
7200 s / 900 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.timmehosting.de (78.47.168.192)2026091802
ns1.timmehosting.de (2a01:4f8:c17:89e2::1)2026091802
ns2.timmehosting.de (157.90.19.57)2026091802
ns2.timmehosting.de (2a01:4f8:1c1e:b474::1)2026091802
ns3.timmehosting.de (94.237.31.204)2026091802
ns3.timmehosting.de (2a04:3542:1000:910:74b0:a6ff:feb3:4ad5)2026091802

Checks

  • ✓ Serial 2026091802 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 15m, expire 7d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.timmehosting.de is one of the listed nameservers.
  • ✓ Contact zonemaster@timmehosting.de #25
    The SOA RNAME zonemaster.timmehosting.de means zonemaster@timmehosting.de.
  • ✓ Date-based serial #26
    The serial 2026091802 follows the YYYYMMDDnn convention (2026-09-18).

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

16 records at the apex

Found

Read from
78.47.168.192:53
TypeValueTTL
SOAns1.timmehosting.de. zonemaster.timmehosting.de. 2026091802 7200 900 604800 864005994
NSns1.timmehosting.de.3594
NSns3.timmehosting.de.3594
NSns2.timmehosting.de.3594
A185.243.134.1103600
MX0 bildungsklick-de.mail.protection.outlook.com.3600
TXT"_gku17k6tgu32ijhm6tj9lvmiip7fs9h"5
TXT"google-site-verification=h4Bw682ai46n1M2ObOXjEZqPjQ-8D4hpPBASM_yNfdM"5
TXT"google-site-verification=Ut_XxmjzIe42XSXxbhhYYXV_ix1Xh003XmWxJF2mwu4"5
TXT"n4b0f05c5rfx325lsrhrs51822zbchgp"5
TXT"v=spf1 a mx include:spf.protection.outlook.com include:spf.crsend.com -all"5
TXT"t04kfvfw4h05km8lh074j6gltxr3n7s7"5
TXT"_a6ptdfiqmyzg6m6jhbseu2skyalpapf"5
TXT"202203191004014pfiqvs26ypr7c3ojb89kzejipq9vgoizsjd64bsc8fjjh3krr"5
TXT"_mkqqxx3iz68zexjq7yn5frf0jc14gt6"5
TXT"_2y9g0undm17a154a79ls11vciqh316n"5

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, MX 1h, NS 59m54s. The NS TTL at the parent is 1d and in the zone 59m54s; 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