sporthilfe.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

ns1.mk.de, ns2.mk.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.mk.de, ns2.mk.de
NS in the zone
ns1.mk.de, ns2.mk.de
NameserverAddressesNetwork (AS)Glue
ns1.mk.de213.172.96.2 2001:1640::12:30AS25394 MK-NETZDIENSTE-AS - MK Netzdienste Verwaltungs GmbH trading as MK Netzdienste GmbH & Co. KG, DE AS25394 MK-NETZDIENSTE-AS - MK Netzdienste Verwaltungs GmbH trading as MK Netzdienste GmbH & Co. KG, DE213.172.96.2 2001:1640::12:30
ns2.mk.de213.172.97.2 2001:1640::12:31AS25394 MK-NETZDIENSTE-AS - MK Netzdienste Verwaltungs GmbH trading as MK Netzdienste GmbH & Co. KG, DE AS25394 MK-NETZDIENSTE-AS - MK Netzdienste Verwaltungs GmbH trading as MK Netzdienste GmbH & Co. KG, DE213.172.97.2 2001:1640::12:31

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.mk.de, ns2.mk.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.
  • i
    One address family in one network
    all IPv6 addresses are in 2001:1640::/48, while the other address family is spread over several networks.
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS25394 (MK-NETZDIENSTE-AS - MK Netzdienste Verwaltungs GmbH trading as MK Netzdienste GmbH & Co. KG, DE): 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
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

warn

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.mk.de 213.172.96.2NOERROR, 7 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.9.17 (built Aug 5 2026 13:27:56 by root@localhost)
ns1.mk.de 2001:1640::12:30NOERROR, 7 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.9.17 (built Aug 5 2026 13:27:56 by root@localhost)
ns2.mk.de 213.172.97.2NOERROR, 7 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.9.17 (built Aug 5 2026 13:27:56 by root@localhost)
ns2.mk.de 2001:1640::12:31NOERROR, 7 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.9.13 (built Feb 19 2026 15:05:01 by root@localhost)

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: ns1.mk.de: "PowerDNS Authoritative Server 4.9.17 (built Aug 5 2026 13:27:56 by root@localhost)"; ns2.mk.de: "PowerDNS Authoritative Server 4.9.17 (built Aug 5 2026 13:27:56 by root@localhost)"; ns2.mk.de: "PowerDNS Authoritative Server 4.9.13 (built Feb 19 2026 15:05:01 by root@localhost)". 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 2026071710 · primary ns1.mk.de

Found

Primary (MNAME)
ns1.mk.de
Contact (RNAME)
hostmaster.mk.de
Serial
2026071710
Refresh / retry
10800 s / 3600 s
Expire
604800 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns1.mk.de (213.172.96.2)2026071710
ns1.mk.de (2001:1640::12:30)2026071710
ns2.mk.de (213.172.97.2)2026071710
ns2.mk.de (2001:1640::12:31)2026071710

Checks

  • ✓ Serial 2026071710 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 7d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.mk.de is one of the listed nameservers.
  • ✓ Contact hostmaster@mk.de #25
    The SOA RNAME hostmaster.mk.de means hostmaster@mk.de.
  • ✓ Date-based serial #26
    The serial 2026071710 follows the YYYYMMDDnn convention (2026-07-17).

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

pass

15 records at the apex

Found

Read from
213.172.96.2:53
TypeValueTTL
SOAns1.mk.de. hostmaster.mk.de. 2026071710 10800 3600 604800 300300
NSns1.mk.de.300
NSns2.mk.de.300
A185.48.220.137300
MX0 sporthilfe-de.mail.protection.outlook.com.300
TXT"ldsJgbBknrkR6AEN7pEf/G3u6v3KvgLJvvGPh8bZmNyQwwbcMhAgKlG0EWDq3fWf8hIe4miNshmfVMHDwOSdPQ=="300
TXT"MS=153B2826A371B28A2BF5BE102326CE3B9B9091A5"300
TXT"KMaP6VZMtNki1e2sko0ixvkNHjErwDNb5JTq0rJoGmwfCUkQpZk/Hrq2UB5vLu1RtFKCg3Pns+RlKFiQubLByg=="300
TXT"linkedin-site-verification=4ecb0d0a-543a-458f-84cb-1866d9df2bc2"300
TXT"_uxkerwf6yezp76j10xhhb7q2m0tqjp2"300
TXT"swisssign-check=0z9gR4LWDMzeY4CBgX6eQeBPuDg"300
TXT"facebook-domain-verification=ukq04nxh22ctevufqc1ino6j81wu2a"300
TXT"v=spf1 include:spf.protection.outlook.com include:spf1.checkinserver.com ip4:185.48.220.220 -all"300
CAA0 issue "letsencrypt.org"300
CAA0 issue "swisssign.com"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 5m, NS 5m. The NS TTL at the parent is 1d and in the zone 5m; 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: letsencrypt.org, swisssign.com.