| Date | IP Address |
| 2025-05-27 | 13.107.253.70 (ClassC) |
| 2025-09-10 | 13.107.246.70 (ClassC) |
| 2026-02-08 | 13.107.226.70 (ClassC) |
| Date | Domain | IP |
| ekyc.internal.stg1.cb.hokkokubank.co.jp | 2023-08-26 | 104.215.58.230 |
| api.st1.cb.hokkokubank.co.jp | 2025-05-27 | 13.107.253.70 |
| login.st1.cb.hokkokubank.co.jp | 2025-07-08 | 13.107.253.70 |
| www.st1.cb.hokkokubank.co.jp | 2025-08-03 | 13.107.253.70 |
| api.cb.hokkokubank.co.jp | 2025-02-17 | 13.107.246.70 |
| ekyc.internal.cb.hokkokubank.co.jp | 2025-05-16 | 104.215.58.230 |
| login.cb.hokkokubank.co.jp | 2025-07-15 | 13.107.253.70 |
| api.it.cb.hokkokubank.co.jp | 2025-02-28 | 13.107.253.70 |
| login.it.cb.hokkokubank.co.jp | 2025-05-10 | 13.107.253.70 |
| www.it.cb.hokkokubank.co.jp | 2025-07-31 | 13.107.253.70 |
| www.cb.hokkokubank.co.jp | 2025-01-24 | 13.107.253.70 |