This page lists every .dk domain whose delegation includes the nameserver df-ns04.csc.dk, together with its IP addresses, network, zone-transfer and ANY-query behaviour, the protocols and RFCs it supports (TCP, EDNS, cookies, NSID, DNS over TLS/HTTPS …), the nameserver sets it is used in and how fast those sets answer. Use it to size a DNS provider, audit a migration or find domains still pointing at an old server. Data comes from our own scanners, which re-resolve every .dk domain in the zone roughly once a week.
The nameserver df-ns04.csc.dk appears in the delegation of 1 .dk domain 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, 1 (100.0%) validate as secure — comfortably above the zone-wide average of 63.9%, while 0 (0.0%) 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 1 timed domains, our resolver needed 30 ms on average to answer an A query and 37 ms for an NS query. Per nameserver set below.
Not profiled: it has no public IPv4 address we could resolve. Retried every few days.
| Nameserver set | Domains | Avg response (A) | NS lookup |
|---|---|---|---|
| df-ns01.csc.dk · df-ns02.csc.dk · df-ns03.csc.dk · df-ns04.csc.dk · ns1-auth.csc.dk · ns2-auth.csc.dk | 1 | 30 ms | 37 ms |
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.
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