This page lists every .dk domain whose delegation includes the nameserver dns51.dns.t-ipnet.de, together with its IP addresses, network, zone-transfer and ANY-query behaviour, the protocols and RFCs it supports (TCP, EDNS, cookies, NSID, DNS over TLS/HTTPS …), the nameserver sets it is used in and how fast those sets answer. Use it to size a DNS provider, audit a migration or find domains still pointing at an old server. Data comes from our own scanners, which re-resolve every .dk domain in the zone roughly once a week.
Not probed yet. This nameserver is queued; the probe runs in the background and the result usually shows here within a few minutes.
| Reverse zone | Prefix | Prefixes | Checked |
|---|---|---|---|
| 0.0.91.in-addr.arpa | 91.0.0.0/24 | 1 | 2026-10-16 |
| 0.144.80.in-addr.arpa | 80.144.0.0/24 | 1 | 2026-10-09 |
| 0.153.62.in-addr.arpa | 62.153.0.0/24 | 1 | 2026-10-12 |
| 0.156.62.in-addr.arpa | 62.156.0.0/24 | 1 | 2026-10-16 |
| 0.164.84.in-addr.arpa | 84.164.0.0/24 | 1 | 2026-10-11 |
| 0.224.62.in-addr.arpa | 62.224.0.0/24 | 1 | 2026-10-13 |
| 188.155.62.in-addr.arpa | 62.155.188.0/24 | 1 | 2026-10-16 |
| 88.167.84.in-addr.arpa | 84.167.88.0/24 | 1 | 2026-10-16 |
in-addr.arpa / ip6.arpa zones delegated to dns51.dns.t-ipnet.de, found from the SOA of the reverse name of each IPv4 /24 behind the zone's websites (and any CIDR page viewed), so the zone is the real delegation point, at whatever prefix length it sits. A /24 whose reverse delegation is broken (SERVFAIL) is not credited to anyone.
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