Domain report: hamburger-kunsthalle.de

Registration

info

.de country-code

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.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

ns1.uvensys.de, ns2.uvensys.de

Nameserver	Addresses	Network (AS)	Glue
ns1.uvensys.de	37.208.104.2 2a00:d0c0:d3:1::100	AS58010 UVENSYS - uvensys GmbH, DE AS58010 UVENSYS - uvensys GmbH, DE	37.208.104.2
ns2.uvensys.de	37.208.110.2 2a00:d0c0:d4:1::100	AS58010 UVENSYS - uvensys GmbH, DE AS58010 UVENSYS - uvensys GmbH, DE	37.208.110.2

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2 nameservers

Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.uvensys.de, ns2.uvensys.de.

#6
✓ 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: ns1.uvensys.de (glue 37.208.104.2, zone 37.208.104.2, 2a00:d0c0:d3:1::100); ns2.uvensys.de (glue 37.208.110.2, zone 37.208.110.2, 2a00:d0c0:d4:1::100). 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 2 IPv4 /24s and 2 IPv6 /48s.
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All nameservers in one AS

All nameserver addresses are announced by one network operator (AS58010 (UVENSYS - uvensys GmbH, DE): 4 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
✓ All reachable over IPv6 #13

Every nameserver has an IPv6 address.

warn

4 of 4 addresses answer authoritatively

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns1.uvensys.de 37.208.104.2	NOERROR, 5 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 4.7.3
ns1.uvensys.de 2a00:d0c0:d3:1::100	NOERROR, 4 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 4.7.3
ns2.uvensys.de 37.208.110.2	NOERROR, 4 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 4.7.3
ns2.uvensys.de 2a00:d0c0:d4:1::100	NOERROR, 5 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 4.7.3

✓ 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.
!

Software version disclosed

These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns1.uvensys.de: "PowerDNS Authoritative Server 4.7.3"; ns2.uvensys.de: "PowerDNS Authoritative Server 4.7.3". Hide or replace the version string.

#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.

warn

serial 2026081102 · primary ns1.uvensys.de

✓ Serial 2026081102 everywhere #22

All nameservers serve the same version of the zone.
!

Unusual SOA timers

expire 1d is shorter than 7d; secondaries stop answering too soon when the primary is down; expire 1d must be longer than refresh + retry. Current values: refresh 1d, retry 1h, expire 1d, negative TTL 1h.

#23
✓ Primary is a public nameserver #24

The primary nameserver ns1.uvensys.de is one of the listed nameservers.
✓ Contact support@uvensys.de #25

The SOA RNAME support.uvensys.de means support@uvensys.de.
✓ Date-based serial #26

The serial 2026081102 follows the YYYYMMDDnn convention (2026-08-11).

warn

Not signed

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11 records at the apex

Type	Value	TTL
SOA	ns1.uvensys.de. support.uvensys.de. 2026081102 86400 3600 86400 3600	3600
NS	ns2.uvensys.de.	3600
NS	ns1.uvensys.de.	3600
A	37.208.107.225	60
AAAA	2a00:d0c0:c:19::11	60
MX	10 mx2.ondataport.de.	3600
MX	10 mx1.ondataport.de.	3600
TXT	"v=spf1 mx include:dataport.de ip4:37.208.111.158 ip4:37.208.107.225 -all"	3600
TXT	"nbq7mjc8zx07gqd29n5rz4x6tnp0d0tb"	3600
TXT	"MS=ms60064166"	3600
TXT	"MS=520D5162E4C05DF2225E1E442676CD4A7EA93F5B"	3600