The nameserver ns3.dns.services appears in the delegation of 5,646 .dk domains in our dataset — 0.42% of every scanned .dk domain. The full list is below — here is how those domains look under the hood.

On the DNSSEC side, 3,339 (59.1%) validate as secure — below the zone-wide average of 62.7%, while 2,162 (38.3%) are unsigned, and 20 (0.4%) currently fail validation outright (bogus) — a further 125 come back indeterminate.

One thing worth flagging: 78 of these domains (1.4%) look like lame delegations — the .dk registry still points them here, but this nameserver doesn't answer authoritatively for the zone, which usually means the hosting was cancelled and the delegation was left dangling.