🔄 Reverse NS Lookup

The nameserver authns001.yacn.dk appears in the delegation of 39 .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, 0 (0.0%) validate as secure — below the zone-wide average of 63.9%, while 39 (100.0%) are unsigned, with none failing validation outright.

Delegation health looks clean, too: none of these domains currently register as lame delegations at this nameserver.

Response time: across 39 timed domains, our resolver needed 329 ms on average to answer an A query and 257 ms for an NS query. Per nameserver set below.

Not profiled: it did not answer at all. Retried every few days.

Times are the scanner's own lookups through its resolver on each domain's latest scan, so they include resolver overhead; compare sets with each other rather than reading them as raw authoritative round-trip times.

in-addr.arpa / ip6.arpa zones delegated to authns001.yacn.dk, 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.