Domain report: tengen.de

Registration

info

.de country-code

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

warn

k1z01s003.kivbf.de, k1z01s004.kivbf.de, ns.frei.net

Nameserver	Addresses	Network (AS)	Glue
k1z01s003.kivbf.de	194.59.36.5	AS50964 Komm-ONE-AS - civillent GmbH, DE	194.59.36.5
k1z01s004.kivbf.de	194.59.36.6	AS50964 Komm-ONE-AS - civillent GmbH, DE	194.59.36.6
ns.frei.net	213.164.64.1	AS13054 BADENIT - badenIT GmbH, DE	-

✓ 3 nameservers #6

Delegated to k1z01s003.kivbf.de, k1z01s004.kivbf.de, ns.frei.net.
✓ 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.
✓ 2 autonomous systems #11

The nameservers are spread over: AS13054 (BADENIT - badenIT GmbH, DE): 1 address; AS50964 (Komm-ONE-AS - civillent GmbH, DE): 2 addresses.
✓ Nameserver names under 2 TLDs #12

Nameserver names use the TLDs .de, .net.
!

No IPv6

None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.

#13

info

3 of 3 addresses answer authoritatively

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
k1z01s003.kivbf.de 194.59.36.5	NOERROR, 13 ms, authoritative	no	yes / yes	refused	DNS
k1z01s004.kivbf.de 194.59.36.6	NOERROR, 10 ms, authoritative	no	yes / yes	refused	DNS
ns.frei.net 213.164.64.1	NOERROR, 9 ms, authoritative	no	yes / yes	refused	FreiNet DNS Service

✓ All respond #14

All 3 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: k1z01s003.kivbf.de: "DNS"; k1z01s004.kivbf.de: "DNS"; ns.frei.net: "FreiNet DNS Service".

#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.

pass

serial 2025091601 · primary k1z01s003.kivbf.de

✓ Serial 2025091601 everywhere #22

All nameservers serve the same version of the zone.
✓ Timers within recommendations #23

SOA refresh 6h, retry 2h, expire 7d, negative TTL 1d.
✓ Primary is a public nameserver #24

The primary nameserver k1z01s003.kivbf.de is one of the listed nameservers.
✓ Contact hostmaster@kivbf.de #25

The SOA RNAME hostmaster.kivbf.de means hostmaster@kivbf.de.
✓ Date-based serial #26

The serial 2025091601 follows the YYYYMMDDnn convention (2025-09-16).

warn

Not signed

info

10 records at the apex

Type	Value	TTL
SOA	k1z01s003.kivbf.de. hostmaster.kivbf.de. 2025091601 21600 7200 604800 86400	86400
NS	k1z01s004.kivbf.de.	86400
NS	ns.frei.net.	86400
NS	k1z01s003.kivbf.de.	86400
A	194.59.37.34	86400
MX	10 mx8.kvnbw.de.	3600
MX	10 mx9.kvnbw.de.	3600
MX	10 mx6.kvnbw.de.	3600
MX	10 mx7.kvnbw.de.	3600
TXT	"v=spf1 a mx include:spf.protect.kvnbw.de ~all"	3600