| Date | IP Address |
| 2021-01-13 | 104.114.79.19 (ClassC) |
| 2021-02-18 | 172.232.21.99 (ClassC) |
| 2021-03-18 | 23.198.6.13 (ClassC) |
| 2021-10-23 | 23.52.42.184 (ClassC) |
| 2022-05-06 | 23.42.158.202 (ClassC) |
| 2022-05-20 | 23.33.22.17 (ClassC) |
| 2023-05-19 | 23.200.156.18 (ClassC) |
| 2023-06-29 | 23.45.123.27 (ClassC) |
| 2023-07-18 | 23.192.220.5 (ClassC) |
| 2024-02-25 | 23.56.168.49 (ClassC) |
| 2024-09-15 | 23.38.109.166 (ClassC) |
| 2025-04-05 | 23.41.4.84 (ClassC) |
| 2025-04-10 | 23.38.191.170 (ClassC) |
| 2025-08-15 | 23.41.4.69 (ClassC) |
| 2025-08-28 | 23.41.4.71 (ClassC) |
| Date | Domain | IP |
| service.iyobank.co.jp | 2024-12-14 | 23.41.4.69 |
| auth.iyobank.co.jp | 2025-04-05 | 23.41.4.84 |
| dev-auth.iyobank.co.jp | 2025-07-24 | 23.41.4.88 |
| webtuti.iyobank.co.jp | 2025-03-06 | 128.168.131.215 |
| map.iyobank.co.jp | 2024-02-14 | 54.248.75.215 |
| service-test.iyobank.co.jp | 2024-10-12 | 23.54.19.147 |
| webtuti-test.iyobank.co.jp | 2025-03-06 | 162.133.138.6 |
| www.iyobank.co.jp | 2025-06-30 | 160.13.220.32 |