Domain report: hab.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

warn

dns-1.serv.uni-osnabrueck.de, dns1.sonia.de, inet.hab.de

Nameserver	Addresses	Network (AS)	Glue
dns-1.serv.uni-osnabrueck.de	131.173.245.1 2001:638:508:f50::83ad:f501	AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE	131.173.245.1 2001:638:508:f50::83ad:f501
dns1.sonia.de	141.41.1.250 2001:638:60a:a001::250	AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE	141.41.1.250
inet.hab.de	194.95.134.2	AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE	194.95.134.2

✓ 3 nameservers #6

Delegated to dns-1.serv.uni-osnabrueck.de, dns1.sonia.de, inet.hab.de.
✓ Parent and zone agree #7

The parent delegation and the zone's NS records list the same nameservers.
!

Glue differs from the zone

The addresses at the parent (glue) differ from the addresses in the zone: dns1.sonia.de (glue 141.41.1.250, zone 141.41.1.250, 2001:638:60a:a001::250). Update the glue at your registrar.

#8
✓ 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.
i

All nameservers in one AS

All nameserver addresses are announced by one network operator (AS680 (DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE): 5 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.

#11
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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
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Partly IPv6

These nameservers have no IPv6 address: inet.hab.de.

#13

fail

4 of 5 addresses answer authoritatively

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
dns-1.serv.uni-osnabrueck.de 131.173.245.1	NOERROR, 16 ms, authoritative	no	yes / yes	refused	-
dns-1.serv.uni-osnabrueck.de 2001:638:508:f50::83ad:f501	NOERROR, 16 ms, authoritative	no	yes / yes	refused	-
dns1.sonia.de 141.41.1.250	NOERROR, 13 ms, authoritative	no	yes / yes	refused	none
dns1.sonia.de 2001:638:60a:a001::250	NOERROR, 21 ms, authoritative	no	yes / yes	refused	none
inet.hab.de 194.95.134.2	no response	no	no / no	-	-

✗

Nameservers not responding

These addresses did not answer, so resolvers waste time on timeouts: inet.hab.de (194.95.134.2): read udp 46.225.38.91:54433->194.95.134.2:53: i/o timeout.

#14
✓ 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: dns1.sonia.de: "none".

#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 2026102100 · primary inet.hab.de

Nameserver	Serial
dns-1.serv.uni-osnabrueck.de (131.173.245.1)	2026102100
dns-1.serv.uni-osnabrueck.de (2001:638:508:f50::83ad:f501)	2026102100
dns1.sonia.de (141.41.1.250)	2026102100
dns1.sonia.de (2001:638:60a:a001::250)	2026102100

✓ Serial 2026102100 everywhere #22

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

SOA refresh 6h, retry 45m, expire 1000h, negative TTL 1h.
✓ Primary is a public nameserver #24

The primary nameserver inet.hab.de is one of the listed nameservers.
✓ Contact admin@hab.de #25

The SOA RNAME admin.hab.de means admin@hab.de.
✓ Date-based serial #26

The serial 2026102100 follows the YYYYMMDDnn convention (2026-10-21).

warn

Not signed

info

9 records at the apex

Type	Value	TTL
SOA	inet.hab.de. admin.hab.de. 2026102100 21600 2700 3600000 3600	86400
NS	inet.hab.de.	86400
NS	dns-1.serv.uni-osnabrueck.de.	86400
NS	dns1.sonia.de.	86400
A	185.115.179.137	86400
MX	100 mx.hab.de.	86400
TXT	"MS=ms78857146"	86400
TXT	"v=spf1 mx a a:mx.hab.de ip4:194.95.134.4 " "a:mail.hab.de ip4:194.95.134.3 ~all"	86400
TXT	"HARICA-QgFPmomQVSd8GiK60Ki"	86400