The nameserver nsauth3.bit.org appears in the delegation of 25 .dk domains in our dataset — <0.01% of every scanned .dk domain. The full list is below — here is how those domains look under the hood.

On the DNSSEC side, 17 (68.0%) validate as secure — comfortably above the zone-wide average of 62.8%, while 1 (4.0%) are unsigned, with none failing validation outright — a further 7 come back indeterminate.

One thing worth flagging: 7 of these domains (28.0%) 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.