dehner.de

Checked 21 October 2026, 22:12 UTC · via 8.8.8.8
!Passed with warnings
22 passed 1 warning 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.telekom.net, pns.dtag.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.telekom.net, pns.dtag.de
NS in the zone
ns1.telekom.net, pns.dtag.de
NameserverAddressesNetwork (AS)Glue
ns1.telekom.net212.185.24.65 2003:180:a:1000::53AS3320 DTAG - Deutsche Telekom AG, DE AS3320 DTAG - Deutsche Telekom AG, DE-
pns.dtag.de194.25.0.125 2003:40:8000::100AS3320 DTAG - Deutsche Telekom AG, DE AS3320 DTAG - Deutsche Telekom AG, DE194.25.0.125 2003:40:8000::100

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.telekom.net, pns.dtag.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 2 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS3320 (DTAG - Deutsche Telekom AG, 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
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .de, .net.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.telekom.net 212.185.24.65NOERROR, 3 ms, authoritativenoyes / yesrefusedDomainNameServer
ns1.telekom.net 2003:180:a:1000::53NOERROR, 4 ms, authoritativenoyes / yesrefusedDomainNameServer
pns.dtag.de 194.25.0.125NOERROR, 9 ms, authoritativenoyes / yesrefusedDomainNameServer
pns.dtag.de 2003:40:8000::100NOERROR, 7 ms, authoritativenoyes / yesrefusedDomainNameServer

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: ns1.telekom.net: "DomainNameServer"; pns.dtag.de: "DomainNameServer".
    #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 2026100100 · primary pns.dtag.de

Found

Primary (MNAME)
pns.dtag.de
Contact (RNAME)
dns.telekom.de
Serial
2026100100
Refresh / retry
10800 s / 3600 s
Expire
2419200 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns1.telekom.net (212.185.24.65)2026100100
ns1.telekom.net (2003:180:a:1000::53)2026100100
pns.dtag.de (194.25.0.125)2026100100
pns.dtag.de (2003:40:8000::100)2026100100

Checks

  • ✓ Serial 2026100100 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 28d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver pns.dtag.de is one of the listed nameservers.
  • ✓ Contact dns@telekom.de #25
    The SOA RNAME dns.telekom.de means dns@telekom.de.
  • ✓ Date-based serial #26
    The serial 2026100100 follows the YYYYMMDDnn convention (2026-10-01).

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

18 records at the apex

Found

Read from
212.185.24.65:53
TypeValueTTL
SOApns.dtag.de. dns.telekom.de. 2026100100 10800 3600 2419200 360043200
NSns1.telekom.net.43200
NSpns.dtag.de.43200
A216.150.1.13600
MX40 mx04.hornetsecurity.com.3600
MX10 mx01.hornetsecurity.com.3600
MX30 mx03.hornetsecurity.com.3600
MX20 mx02.hornetsecurity.com.3600
TXT"google-site-verification=KE3TfeFGvL1_2xWQPvf_FztcLC3WBwIXBfEqDqdEy4A"3600
TXT"teamviewer-sso-verification=c6a1f6573f5447fda2914fb2edd59c48"3600
TXT"350e0d2bf286aff6e3043521605e7a4070733d15d11054ae9f"3600
TXT"asn-verification=c3aebe422f8013ddff29b8b0bc96f9772fe894209da05f5ada9a527d58e075ef"3600
TXT"sending_domain1030131=ff9230f828a7e180029d01cf5a653df121409090177ebd6b03e6ed2f43d7e9b2"3600
TXT"MS=ms87369142"3600
TXT"+laxeRxazqWNht1UgeabSqefyuiNY7ZnozNqpkdihMzHysD+V/bQzZ0xWmiFJl9HQepx34iRhJm4+PGWF+nwqA=="3600
TXT"fastly-domain-delegation-4dni7vdg7aaudzi4v73i-822026-2024-10-14"3600
TXT"v=spf1 ip4:93.104.246.192/27 ip4:62.159.41.0/27 ip4:62.204.177.24/29 ip4:62.204.178.224/27 include:_spf.salesforce.com include:spf.hornetsecurity.com include:spf.protection.outlook.com include:_spf.psm.knowbe4.com ~all"3600
TXT"atlassian-domain-verification=eJ2Znb/5Sj48dHvzDdmdNkQ/wR5dTOTIwddpmHhJsRM7o7Xur9odzr8CoIYNfXEA"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, MX 1h, NS 12h. The NS TTL at the parent is 1d and in the zone 12h; 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.
  • 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