Domain report: rbsx.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.
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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

info

ns.checkdomain.de, ns2.checkdomain.de

Nameserver	Addresses	Network (AS)	Glue
ns.checkdomain.de	109.237.143.11 2a02:2b80:101:5000::9	AS45012 CLOUDPIT - dogado GmbH, DE AS45012 CLOUDPIT - dogado GmbH, DE	109.237.143.11 2a02:2b80:101:5000::9
ns2.checkdomain.de	5.9.190.98 2a01:4f8:2b02:a88::106	AS24940 HETZNER-AS - Hetzner Online GmbH, DE AS24940 HETZNER-AS - Hetzner Online GmbH, DE	5.9.190.98 2a01:4f8:2b02:a88::106

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2 nameservers

Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns.checkdomain.de, ns2.checkdomain.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.
✓ 2 autonomous systems #11

The nameservers are spread over: AS24940 (HETZNER-AS - Hetzner Online GmbH, DE): 2 addresses; AS45012 (CLOUDPIT - dogado GmbH, DE): 2 addresses.
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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.

pass

4 of 4 addresses answer authoritatively

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns.checkdomain.de 109.237.143.11	NOERROR, 16 ms, authoritative	no	yes / yes	refused	-
ns.checkdomain.de 2a02:2b80:101:5000::9	NOERROR, 17 ms, authoritative	no	yes / yes	refused	-
ns2.checkdomain.de 5.9.190.98	NOERROR, 3 ms, authoritative	no	yes / yes	refused	-
ns2.checkdomain.de 2a01:4f8:2b02:a88::106	NOERROR, 3 ms, authoritative	no	yes / yes	refused	-

✓ 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.
✓ No version disclosed #17

The nameservers don't reveal their software version.
✓ 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 2026100303 · primary ns.checkdomain.de

✓ Serial 2026100303 everywhere #22

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

SOA refresh 11h6m40s, retry 2h, expire 7d, negative TTL 5m.
✓ Primary is a public nameserver #24

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

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

The serial 2026100303 follows the YYYYMMDDnn convention (2026-10-03).

warn

Not signed

info

7 records at the apex

Type	Value	TTL
SOA	ns.checkdomain.de. hostmaster.checkdomain.de. 2026100303 40000 7200 604800 300	300
NS	ns.checkdomain.de.	86400
NS	ns2.checkdomain.de.	86400
A	88.99.101.251	300
AAAA	2a01:4f8:221:11cd:9734:4c26:6044:5f33	300
MX	20 mx2.rbsx.de.	300
MX	10 mx1.rbsx.de.	300