| Date | IP Address |
| 2025-02-01 | 35.177.41.130 (ClassC) |
| 2025-05-21 | 3.11.150.132 (ClassC) |
| 2025-05-28 | 51.24.36.11 (ClassC) |
| Date | Domain | IP |
| api.review-k.staging.account.gov.uk | 2024-05-30 | 18.170.145.48 |
| results.transaction.staging.account.gov.uk | 2024-05-30 | 18.135.170.22 |
| event-replay.transaction.staging.account.gov.uk | 2025-05-21 | 3.11.150.132 |