The nameserver ns3.eurodns.com appears in the delegation of 13,503 .dk domains in our dataset — 1.01% of every scanned .dk domain. The full list is below — here is how those domains look under the hood.

On the DNSSEC side, 5,444 (40.3%) validate as secure — below the zone-wide average of 62.7%, while 7,815 (57.9%) are unsigned, and 9 (0.1%) currently fail validation outright (bogus) — a further 235 come back indeterminate.

One thing worth flagging: 115 of these domains (0.9%) 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.