drk.de

Checked 21 October 2026, 22:15 UTC · via 8.8.8.8
!Passed with warnings
17 passed 5 warnings 0 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

dns01.dt-internet.de, dns05.d-t-internet.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
dns01.dt-internet.de, dns05.d-t-internet.de
NS in the zone
dns01.dt-internet.de, dns05.d-t-internet.de
NameserverAddressesNetwork (AS)Glue
dns01.dt-internet.de85.14.209.240AS24961 MYLOC-AS - WIIT AG, DE85.14.209.240 2001:4ba0:92c1:9d::14
dns05.d-t-internet.de185.102.94.105AS29423 gridscale - gridscale GmbH, DE185.102.94.105

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: dns01.dt-internet.de, dns05.d-t-internet.de.
    #6
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • !
    Glue differs from the zone
    The addresses at the parent (glue) differ from the addresses in the zone: dns01.dt-internet.de (glue 85.14.209.240, 2001:4ba0:92c1:9d::14, zone 85.14.209.240). Update the glue at your registrar.
    #8
  • ✓ 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.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS24961 (MYLOC-AS - WIIT AG, DE): 1 address; AS29423 (gridscale - gridscale GmbH, DE): 1 address.
  • 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

2 of 2 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns01.dt-internet.de 85.14.209.240NOERROR, 7 ms, authoritativenoyes / yesrefusedhi
dns05.d-t-internet.de 185.102.94.105NOERROR, 4 ms, authoritativenoyes / yesrefusedhi

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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: dns01.dt-internet.de: "hi"; dns05.d-t-internet.de: "hi".
    #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

warn

serial 3792327923 · primary dns01.dt-internet.de

Found

Primary (MNAME)
dns01.dt-internet.de
Contact (RNAME)
dnsadmin.dt-internet.de
Serial
3792327923
Refresh / retry
10800 s / 3600 s
Expire
604800 s
Negative TTL
80 s

Serial per nameserver

NameserverSerial
dns01.dt-internet.de (85.14.209.240)3792327923
dns05.d-t-internet.de (185.102.94.105)3792327923

Checks

  • ✓ Serial 3792327923 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    negative caching TTL (minimum) 1m20s is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 3h, retry 1h, expire 7d, negative TTL 1m20s.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns01.dt-internet.de is one of the listed nameservers.
  • ✓ Contact dnsadmin@dt-internet.de #25
    The SOA RNAME dnsadmin.dt-internet.de means dnsadmin@dt-internet.de.
  • ✓ Timestamp serial #26
    The serial 3792327923 is a Unix timestamp (2090-03-04 16:25 UTC).

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

13 records at the apex

Found

Read from
85.14.209.240:53
TypeValueTTL
SOAdns01.dt-internet.de. dnsadmin.dt-internet.de. 3792327923 10800 3600 604800 8080
NSdns01.dt-internet.de.80
NSdns05.d-t-internet.de.80
A87.225.254.21080
AAAA2001:bf0:242::21080
MX10 drk-de.mail.protection.outlook.com.80
TXT"docusign=74af6bdf-c7d0-42a1-af4d-8e2d05be9e40"80
TXT"MS=ms37037916"80
TXT"d365mktkey=PXV7XZ8bSvxLjkdVVj9ZnBZwPsbaN9f9IxxWMegOGNQx"80
TXT"d365mktkey=bjAGxG2zl3CjJrwfjpOxT5W5kqJVieIWc5P8dPUxgoox"80
TXT"v=spf1 mx ip4:88.198.209.86 ip4:188.34.200.150 ip6:2a01:4f8:1c1c:53b::1 ip6:2001:bf0:220::141 ip4:212.44.160.0/26 ip4:212.44.160.128/27 ip4:185.98.184.0/24 ip4:80.82.206.0/26 ip4:109.234.127.0/24 " "ip4:46.30.84.157 ip4:87.225.254.210 ip6:2001:bf0:242::210 ip4:87.225.254.196 ip4:89.246.238.40 include:ihr-webspace.de include:spf.protection.outlook.com include:mail.zendesk.com -all"80
TXT"dtinternet=mein_rotes_kreuz_app"80
TXT"apple-domain-verification=GcbVVOFl1si0qqxZ"80

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m20s), AAAA (1m20s), MX (1m20s), NS (1m20s). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1d and in the zone 1m20s; resolvers may use either.
    #32
  • ✓ 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