The nameserver ns4.simply.com appears in the delegation of 152,758 .dk domains in our dataset — 11.46% of every scanned .dk domain. The full list is below — here is how those domains look under the hood.

On the DNSSEC side, 137,550 (90.0%) validate as secure — comfortably above the zone-wide average of 62.7%, while 1,484 (1.0%) are unsigned, and 2,000 (1.3%) currently fail validation outright (bogus) — a further 11,724 come back indeterminate.

One thing worth flagging: 13,574 of these domains (8.9%) 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.