This page lists every .dk domain whose delegation includes the nameserver acns03.xaas.systems, 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.c.1.1.0.0.a.2.ip6.arpa | 2a00:11c0::/32 | 1 | 2026-10-16 |
| 20.22.185.in-addr.arpa | 185.22.20.0/24 | 1 | 2026-10-16 |
| 216.172.188.in-addr.arpa | 188.172.216.0/24 | 1 | 2026-10-13 |
| 220.172.188.in-addr.arpa | 188.172.220.0/24 | 1 | 2026-10-16 |
| 224.252.37.in-addr.arpa | 37.252.224.0/24 | 1 | 2026-10-12 |
| 236.172.188.in-addr.arpa | 188.172.236.0/24 | 1 | 2026-10-15 |
| 252.252.37.in-addr.arpa | 37.252.252.0/24 | 1 | 2026-10-16 |
| 72.65.188.in-addr.arpa | 188.65.72.0/24 | 1 | 2026-10-12 |
| 73.65.188.in-addr.arpa | 188.65.73.0/24 | 1 | 2026-10-16 |
in-addr.arpa / ip6.arpa zones delegated to acns03.xaas.systems, 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.
Loading…