Every .dk domain whose A record resolves to 138.12.4.23. Shared-hosting servers often carry hundreds of sites on one address; this reverse IP lookup shows exactly which .dk names share it. Data comes from our own scanners, which re-resolve every .dk domain in the zone roughly once a week.
| CIDR | Reverse zone | Nameservers |
|---|---|---|
| 138.12.0.0/17 | 138.in-addr.arpa | arin.authdns.ripe.net r.arin.net u.arin.net x.arin.net y.arin.net z.arin.net |
The zone shown is the most specific level that answers an NS query, so a classless delegation may report its parent.