Every .dk domain whose A record resolves to 66.220.149.11. 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 |
|---|---|---|
| 66.220.144.0/20 | 144.220.66.in-addr.arpa | a.ns.facebook.com b.ns.facebook.com c.ns.facebook.com d.ns.facebook.com |
The zone shown is the most specific level that answers an NS query, so a classless delegation may report its parent.