| Date | IP Address |
| 2022-02-04 | 18.130.166.97 (ClassC) |
| 2025-02-01 | 18.171.90.0 (ClassC) |
| 2025-02-11 | 35.178.209.186 (ClassC) |
| 2025-03-27 | 18.133.18.40 (ClassC) |
| 2025-04-02 | 13.41.42.60 (ClassC) |
| 2025-04-13 | 18.171.73.37 (ClassC) |
| 2025-04-27 | 13.41.100.251 (ClassC) |
| 2025-05-12 | 13.42.211.66 (ClassC) |
| Date | Domain | IP |
| refdata.prototype.cop.homeoffice.gov.uk | 2025-01-27 | 18.168.233.243 |
| formbuilder.eforms.cop.homeoffice.gov.uk | 2025-02-06 | 18.175.34.211 |
| form-api-server.eforms.cop.homeoffice.gov.uk | 2025-02-07 | 18.175.27.66 |
| attachments.eforms.cop.homeoffice.gov.uk | 2025-01-29 | 18.175.27.66 |
| workflow-service.staging.cerberus.cop.homeoffice.gov.uk | 2025-02-01 | 18.171.90.0 |