| Date | IP Address |
| 2018-07-18 | 35.176.115.32 (ClassC) |
| 2025-09-28 | 18.168.103.92 (ClassC) |
| 2025-12-26 | 18.135.163.88 (ClassC) |
| 2026-01-10 | 3.9.71.88 (ClassC) |
| Date | Domain | IP |
| ingress-external.notprod.acp.homeoffice.gov.uk | 2025-01-07 | 3.8.38.227 |
| test1-tls.testing.acp.homeoffice.gov.uk | 2025-09-28 | 18.168.103.92 |
| test-tls.testing.acp.homeoffice.gov.uk | 2025-09-06 | 18.135.163.88 |
| ingress-external.ops.acp.homeoffice.gov.uk | 2024-05-30 | 3.11.89.232 |
| support.acp.homeoffice.gov.uk | 2024-05-30 | 3.11.89.232 |