| Date | IP Address |
| 2025-01-06 | 163.171.4.12 (ClassC) |
| Date | Domain | IP |
| ist3.ibt.hmrc.gov.uk | 2023-08-25 | 104.108.90.57 |
| pensionschemes.ibt.hmrc.gov.uk | 2023-08-25 | 104.108.90.57 |
| ita.ws.ibt.hmrc.gov.uk | 2025-01-06 | 163.171.4.241 |
| slc.ws.ibt.hmrc.gov.uk | 2025-01-06 | 163.171.4.12 |
| bankwizard.ws.ibt.hmrc.gov.uk | 2024-11-07 | 163.171.4.12 |
| soae.ws.ibt.hmrc.gov.uk | 2024-12-23 | 163.171.4.12 |
| exchange.ws.ibt.hmrc.gov.uk | 2024-11-01 | 163.171.4.12 |
| if.ws.ibt.hmrc.gov.uk | 2024-12-29 | 163.171.4.12 |
| ics.ws.ibt.hmrc.gov.uk | 2023-08-25 | 104.108.90.57 |
| emcs.ws.ibt.hmrc.gov.uk | 2023-08-25 | 104.108.90.57 |
| hods.ws.ibt.hmrc.gov.uk | 2025-01-06 | 163.171.4.12 |
| io-services.ws.ibt.hmrc.gov.uk | 2025-01-06 | 163.171.4.12 |
| des.ws.ibt.hmrc.gov.uk | 2024-12-19 | 163.171.4.12 |
| ifs.ws.ibt.hmrc.gov.uk | 2024-12-21 | 163.171.4.12 |
| apis.ws.ibt.hmrc.gov.uk | 2024-12-21 | 163.171.4.12 |
| chris.ws.ibt.hmrc.gov.uk | 2024-12-11 | 163.171.4.12 |
| customs.ws.ibt.hmrc.gov.uk | 2025-01-06 | 163.171.4.12 |
| dps.ws.ibt.hmrc.gov.uk | 2023-08-25 | 104.108.90.57 |
| content.ws.ibt.hmrc.gov.uk | 2025-01-06 | 163.171.4.12 |
| iasspx.ws.ibt.hmrc.gov.uk | 2024-12-16 | 163.171.4.12 |