This page lists every .dk domain whose delegation includes the nameserver dns.trouble-free.net, 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 |
|---|---|---|---|
| 120.250.162.in-addr.arpa | 162.250.120.0/24 | 1 | 2026-10-19 |
| 121.250.162.in-addr.arpa | 162.250.121.0/24 | 1 | 2026-10-16 |
| 124.250.162.in-addr.arpa | 162.250.124.0/24 | 1 | 2026-10-16 |
| 126.250.162.in-addr.arpa | 162.250.126.0/24 | 1 | 2026-10-16 |
| 144.159.209.in-addr.arpa | 209.159.144.0/24 | 1 | 2026-10-17 |
| 158.159.209.in-addr.arpa | 209.159.158.0/24 | 1 | 2026-10-16 |
| 162.214.173.in-addr.arpa | 173.214.162.0/24 | 1 | 2026-10-19 |
| 163.214.173.in-addr.arpa | 173.214.163.0/24 | 1 | 2026-10-16 |
| 168.214.173.in-addr.arpa | 173.214.168.0/24 | 1 | 2026-10-18 |
| 170.214.173.in-addr.arpa | 173.214.170.0/24 | 1 | 2026-10-16 |
| 176.138.174.in-addr.arpa | 174.138.176.0/24 | 1 | 2026-10-17 |
| 184.138.174.in-addr.arpa | 174.138.184.0/24 | 1 | 2026-10-16 |
| 226.158.216.in-addr.arpa | 216.158.226.0/24 | 1 | 2026-10-18 |
| 226.23.66.in-addr.arpa | 66.23.226.0/24 | 1 | 2026-10-16 |
| 226.45.66.in-addr.arpa | 66.45.226.0/24 | 1 | 2026-10-16 |
| 227.158.216.in-addr.arpa | 216.158.227.0/24 | 1 | 2026-10-16 |
| 228.158.216.in-addr.arpa | 216.158.228.0/24 | 1 | 2026-10-18 |
| 229.158.216.in-addr.arpa | 216.158.229.0/24 | 1 | 2026-10-16 |
| 234.23.66.in-addr.arpa | 66.23.234.0/24 | 1 | 2026-10-16 |
| 235.45.66.in-addr.arpa | 66.45.235.0/24 | 1 | 2026-10-16 |
| 251.45.66.in-addr.arpa | 66.45.251.0/24 | 1 | 2026-10-16 |
| 35.20.64.in-addr.arpa | 64.20.35.0/24 | 1 | 2026-10-16 |
| 40.20.64.in-addr.arpa | 64.20.40.0/24 | 1 | 2026-10-16 |
| 53.20.64.in-addr.arpa | 64.20.53.0/24 | 1 | 2026-10-16 |
| 56.20.64.in-addr.arpa | 64.20.56.0/24 | 1 | 2026-10-19 |
| 61.20.64.in-addr.arpa | 64.20.61.0/24 | 1 | 2026-10-16 |
| 64.50.74.in-addr.arpa | 74.50.64.0/24 | 1 | 2026-10-19 |
| 80.64.192.in-addr.arpa | 192.64.80.0/24 | 1 | 2026-10-19 |
| 89.50.74.in-addr.arpa | 74.50.89.0/24 | 1 | 2026-10-16 |
in-addr.arpa / ip6.arpa zones delegated to dns.trouble-free.net, 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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