Domain report: tchncs.de

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

pass

ns.inwx.de, ns2.inwx.de, ns3.inwx.eu

Found

Parent zone: de
Delegation from: a.nic.de (194.0.0.53)
NS at the parent: ns.inwx.de, ns2.inwx.de, ns3.inwx.eu
NS in the zone: ns.inwx.de, ns2.inwx.de, ns3.inwx.eu

Nameserver	Addresses	Network (AS)	Glue
ns.inwx.de	192.174.68.104 2001:67c:1bc::104	AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT	-
ns2.inwx.de	176.97.158.104 2001:67c:10b8::104	AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT	-
ns3.inwx.eu	45.87.158.53 2a02:d500::53	AS48596 INWX - InterNetworX Management GmbH, DE AS48596 INWX - InterNetworX Management GmbH, DE	-

Checks

✓ 3 nameservers #6

Delegated to ns.inwx.de, ns2.inwx.de, ns3.inwx.eu.
✓ 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: AS1921 (RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT): 4 addresses; AS48596 (INWX - InterNetworX Management GmbH, DE): 2 addresses.
✓ Nameserver names under 2 TLDs #12

Nameserver names use the TLDs .de, .eu.
✓ All reachable over IPv6 #13

Every nameserver has an IPv6 address.

Nameservers

info

6 of 6 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns.inwx.de 192.174.68.104	NOERROR, 5 ms, authoritative	no	yes / yes	refused	RcodeZero DNS
ns.inwx.de 2001:67c:1bc::104	NOERROR, 5 ms, authoritative	no	yes / yes	refused	RcodeZero DNS
ns2.inwx.de 176.97.158.104	NOERROR, 12 ms, authoritative	no	yes / yes	refused	reg-wie1
ns2.inwx.de 2001:67c:10b8::104	NOERROR, 12 ms, authoritative	no	yes / yes	refused	reg-wie1
ns3.inwx.eu 45.87.158.53	NOERROR, 12 ms, authoritative	no	yes / yes	refused	INWX AXFR Server
ns3.inwx.eu 2a02:d500::53	NOERROR, 12 ms, authoritative	no	yes / yes	refused	INWX AXFR Server

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.
i

Identifying string disclosed

These nameservers answer version queries with a string that is not a version number: ns.inwx.de: "RcodeZero DNS"; ns2.inwx.de: "reg-wie1"; ns3.inwx.eu: "INWX AXFR Server".

#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 2026101701 · primary ns.inwx.de

Found

Primary (MNAME): ns.inwx.de
Contact (RNAME): hostmaster.inwx.de
Serial: 2026101701
Refresh / retry: 10800 s / 3600 s
Expire: 604800 s
Negative TTL: 3600 s

Serial per nameserver

Nameserver	Serial
ns.inwx.de (192.174.68.104)	2026101701
ns.inwx.de (2001:67c:1bc::104)	2026101701
ns2.inwx.de (176.97.158.104)	2026101701
ns2.inwx.de (2001:67c:10b8::104)	2026101701
ns3.inwx.eu (45.87.158.53)	2026101701
ns3.inwx.eu (2a02:d500::53)	2026101701

Checks

✓ Serial 2026101701 everywhere #22

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

SOA refresh 3h, retry 1h, expire 7d, negative TTL 1h.
✓ Primary is a public nameserver #24

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

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

The serial 2026101701 follows the YYYYMMDDnn convention (2026-10-17).

DNSSEC

warn

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC3
NSEC3: 0 iterations, 0-byte salt
Signatures valid until: 29 October 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
32043	ECDSAP256SHA256 (13)	SHA256 8F28317C768B0654…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
32043	KSK (257)	ECDSAP256SHA256 (13)

Checks

✓ Signed and validated #27

The zone is signed, the parent publishes a DS record, and the resolver validates the answers.
✓ DS matches a key #28

The DS record at the parent matches a key in the zone: key tag 32043 (SHA256).
✓ Modern algorithms #29

Key algorithms: ECDSAP256SHA256 (13).
!

Signatures expire soon

The earliest signature expires at 2026-10-29 00:00 UTC (in 167h0m0s). Check that automatic re-signing works.

#30
✓ NSEC3 as recommended #31

The zone uses NSEC3 with 0 iterations and no salt (RFC 9276).

Records

info

13 records at the apex

Found

Read from: 192.174.68.104:53

Type	Value	TTL
SOA	ns.inwx.de. hostmaster.inwx.de. 2026101701 10800 3600 604800 3600	86400
NS	ns.inwx.de.	86400
NS	ns2.inwx.de.	86400
NS	ns3.inwx.eu.	86400
A	89.58.62.32	600
AAAA	2a0a:4cc0:1:337:e44c:e9ff:fe41:6688	600
MX	10 h1.tchncs.de.	600
TXT	"v=spf1 mx a -all"	600
TXT	"openpgp4fpr:801038133C9B498305FD6FFD5E1AE9635F532C4A"	600
TXT	"google-site-verification=e283FWDjduEjXZ99Qbq5nD4VeP7qrbjQ3Rmzs9Uv6iE"	600
TXT	"keybase-site-verification=JA0BQud1tbaAfYXi_WBX_-kf9X6Aicy9wU31PvevwLE"	600
TXT	"brave-ledger-verification=e6983f5e531070e9c458d594cb49a902302ce1b846775e44d0cf48d5c7668693"	600
CAA	0 issue "letsencrypt.org"	600

Checks

✓ TTLs within range #32

TTLs: A 10m, AAAA 10m, MX 10m, NS 1d.
✓ 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
✓ CAA restricts issuance #35

Certificates may be issued by: letsencrypt.org.