🔄 Reverse NS Lookup

Find all domains using this nameserver

This page lists every .dk domain whose delegation includes the nameserver ns3.alphasite.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.

🧭 ns3.alphasite.dk at a glance#

nameserver profile from our scan data

The nameserver ns3.alphasite.dk appears in the delegation of 10 .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 64.0%, while 1 (10.0%) are unsigned, with none failing validation outright — a further 9 come back indeterminate.

One thing worth flagging: 9 of these domains (90.0%) 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.

Response time: across 1 timed domains, our resolver needed 104 ms on average to answer an A query and 119 ms for an NS query. Per nameserver set below.

🖥️ ns3.alphasite.dk#

Probed 2026-09-23 12:56
Network
No IPs resolved yet
Probes
AXFR Refused
IXFR Refused
Glue —
ANY No response
Version Hidden

🧩 Protocols & RFCs#

probed 2026-10-19 01:12

Not profiled: it has no public IPv4 address we could resolve. Retried every few days.

🔗 Nameserver sets using ns3.alphasite.dk#

top 2 by domains
Nameserver setDomainsAvg response (A)NS lookup
ns3.alphasite.dk · ns4.alphasite.dk 9 — —
ns1.basejump.dk · ns1.kortermann-hosting.dk · ns2.kortermann-hosting.dk · ns3.alphasite.dk 1 104 ms 119 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.

📈 DNSSEC Status Over Time

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