Domain report: schubert-verlag.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

ns.second-ns.de, ns3.your-server.de

Nameserver	Addresses	Network (AS)	Glue
ns.second-ns.com (zone only)	213.239.204.242 2a01:4f8:0:a101::b:1	AS24940 HETZNER-AS - Hetzner Online GmbH, DE AS24940 HETZNER-AS - Hetzner Online GmbH, DE	-
ns.second-ns.de (parent only)	193.47.99.4 2001:67c:192c::add:b3	AS12337 NORIS-NETWORK - noris network AG, DE AS12337 NORIS-NETWORK - noris network AG, DE	-
ns1.your-server.de (zone only)	213.133.100.102 2a01:4f8:0:1::5ddc:1	AS24940 HETZNER-AS - Hetzner Online GmbH, DE AS24940 HETZNER-AS - Hetzner Online GmbH, DE	-
ns3.second-ns.de (zone only)	193.47.99.4 2001:67c:192c::add:b3	AS12337 NORIS-NETWORK - noris network AG, DE AS12337 NORIS-NETWORK - noris network AG, DE	-
ns3.your-server.de (parent only)	213.133.100.102	AS24940 HETZNER-AS - Hetzner Online GmbH, DE	-

i

2 nameservers

Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns.second-ns.de, ns3.your-server.de.

#6
!

NS sets differ

The nameservers at the parent and in the zone should be the same. Only at the parent: ns.second-ns.de, ns3.your-server.de; only in the zone: ns.second-ns.com, ns1.your-server.de, ns3.second-ns.de. ns.second-ns.com, ns.second-ns.de, ns1.your-server.de, ns3.second-ns.de, ns3.your-server.de report NS ns.second-ns.com ns1.your-server.de ns3.second-ns.de.

#7
✓ 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 2 IPv6 /48s.
✓ 2 autonomous systems #11

The nameservers are spread over: AS12337 (NORIS-NETWORK - noris network AG, DE): 4 addresses; AS24940 (HETZNER-AS - Hetzner Online GmbH, DE): 5 addresses.
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
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Partly IPv6

These nameservers have no IPv6 address: ns3.your-server.de.

#13

pass

9 of 9 addresses answer authoritatively

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns.second-ns.com 213.239.204.242	NOERROR, 2 ms, authoritative	no	yes / yes	refused	-
ns.second-ns.com 2a01:4f8:0:a101::b:1	NOERROR, 2 ms, authoritative	no	yes / yes	refused	-
ns.second-ns.de 193.47.99.4	NOERROR, 5 ms, authoritative	no	yes / yes	refused	-
ns.second-ns.de 2001:67c:192c::add:b3	NOERROR, 6 ms, authoritative	no	yes / yes	refused	-
ns1.your-server.de 213.133.100.102	NOERROR, 0 ms, authoritative	no	yes / yes	refused	-
ns1.your-server.de 2a01:4f8:0:1::5ddc:1	NOERROR, 0 ms, authoritative	no	yes / yes	refused	-
ns3.second-ns.de 193.47.99.4	NOERROR, 5 ms, authoritative	no	yes / yes	refused	-
ns3.second-ns.de 2001:67c:192c::add:b3	NOERROR, 6 ms, authoritative	no	yes / yes	refused	-
ns3.your-server.de 213.133.100.102	NOERROR, 0 ms, authoritative	no	yes / yes	refused	-

✓ All respond #14

All 9 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 2026040700 · primary ns1.your-server.de

✓ Serial 2026040700 everywhere #22

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

SOA refresh 1d, retry 30m, expire 1000h, negative TTL 1d.
✓ Primary is a public nameserver #24

The primary nameserver ns1.your-server.de is one of the listed nameservers.
✓ Contact postmaster@your-server.de #25

The SOA RNAME postmaster.your-server.de means postmaster@your-server.de.
✓ Date-based serial #26

The serial 2026040700 follows the YYYYMMDDnn convention (2026-04-07).

warn

Not signed

info

8 records at the apex

Type	Value	TTL
SOA	ns1.your-server.de. postmaster.your-server.de. 2026040700 86400 1800 3600000 86400	86400
NS	ns.second-ns.com.	86400
NS	ns1.your-server.de.	86400
NS	ns3.second-ns.de.	86400
A	213.133.104.3	86400
MX	10 www3.your-server.de.	86400
TXT	"MS=ms16234097"	3600
TXT	"v=spf1 a mx include:csa.wwwserver.net ~all"	3600