| Date | IP Address |
| 2020-12-10 | 184.30.42.179 (ClassC) |
| 2020-12-28 | 104.96.183.113 (ClassC) |
| 2021-04-07 | 172.232.13.49 (ClassC) |
| 2022-01-05 | 23.54.76.133 (ClassC) |
| 2025-10-13 | 23.41.4.72 (ClassC) |
| 2026-01-26 | 23.41.4.88 (ClassC) |
| Date | Domain | IP |
| sc1.hokuyobank.co.jp | 2024-09-27 | 23.54.19.170 |
| test-sc1.hokuyobank.co.jp | 2025-10-17 | 23.41.4.88 |
| fn1.hokuyobank.co.jp | 2023-10-30 | 23.54.19.163 |
| test-fn1.hokuyobank.co.jp | 2024-09-29 | 23.54.19.43 |
| dev-fn1.hokuyobank.co.jp | 2025-10-13 | 23.41.4.72 |
| fn2.hokuyobank.co.jp | 2023-12-04 | 104.96.163.214 |
| dev-fn2.hokuyobank.co.jp | 2025-10-13 | 23.41.4.88 |
| hd3.hokuyobank.co.jp | 2025-12-10 | 23.41.4.72 |
| bd3-test.hokuyobank.co.jp | 2024-06-17 | 23.41.4.85 |
| www.hokuyobank.co.jp | 2024-06-17 | 103.4.43.32 |