| Date | IP Address |
| 2020-02-06 | 23.66.74.117 (ClassC) |
| 2023-04-18 | 23.8.66.7 (ClassC) |
| 2023-08-26 | 104.100.64.151 (ClassC) |
| 2024-11-25 | 92.122.15.113 (ClassC) |
| 2025-02-25 | 23.193.74.93 (ClassC) |
| 2025-03-25 | 23.198.107.248 (ClassC) |
| Date | Domain | IP |
| www-tsm.costar.co.uk | 2024-06-28 | 23.46.17.36 |
| www-dvm.costar.co.uk | 2024-08-27 | 23.46.228.172 |
| www-tsr.costar.co.uk | 2024-07-24 | 23.46.17.36 |
| wwwtest.costar.co.uk | 2023-08-25 | 23.198.174.29 |
| www.costar.co.uk | 2023-08-26 | 104.100.64.151 |