| Date | IP Address |
| 2021-06-07 | 13.225.61.22 (ClassC) |
| 2021-06-07 | 13.225.61.29 (ClassC) |
| 2024-08-13 | 18.161.6.115 (ClassC) |
| 2024-09-20 | 99.84.66.118 (ClassC) |
| 2025-04-04 | 18.161.6.118 (ClassC) |
| 2025-08-02 | 3.175.34.28 (ClassC) |
| Date | Domain | IP |
| authoring.hlf.org.uk | 2025-04-27 | 109.73.112.106 |
| welshauthoring.hlf.org.uk | 2025-04-24 | 109.73.112.107 |
| forms.hlf.org.uk | 2025-04-25 | 212.46.129.193 |
| www.hlf.org.uk | 2024-08-13 | 18.161.6.115 |