🔄 Reverse NS Lookup

Find all domains using this nameserver

This page lists every .dk domain whose delegation includes the nameserver smsfonen.byten.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.

🧭 smsfonen.byten.dk at a glance#

nameserver profile from our scan data

The nameserver smsfonen.byten.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, 0 (0.0%) validate as secure — below the zone-wide average of 63.9%, while 1 (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 1 timed domains, our resolver needed 76 ms on average to answer an A query and 117 ms for an NS query. Per nameserver set below.

🖥️ smsfonen.byten.dk#

Probed 2026-09-30 05:16

🧩 Protocols & RFCs#

probed 2026-10-22 17:03

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

🔗 Nameserver sets using smsfonen.byten.dk#

top 1 by domains
Nameserver setDomainsAvg response (A)NS lookup
smsfonen.byten.dk 1 76 ms 117 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.

Found 1 domain matching smsfonen.byten.dk
Domain
smsfonen.dk View →
📈 DNSSEC Status Over Time

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