Every .dk domain whose A record resolves to 198.21.19.135. 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 |
|---|---|---|
| 198.21.16.0/20 | 16.21.198.in-addr.arpa | a1-178.akam.net a18-66.akam.net a4-67.akam.net a6-65.akam.net a7-66.akam.net a9-66.akam.net |
The zone shown is the most specific level that answers an NS query, so a classless delegation may report its parent.