| Date | IP Address |
| 2021-02-03 | 13.227.41.116 (ClassC) |
| 2021-02-03 | 13.227.41.13 (ClassC) |
| 2021-02-03 | 13.227.41.23 (ClassC) |
| 2021-02-03 | 13.227.41.47 (ClassC) |
| 2021-10-18 | 52.84.121.38 (ClassC) |
| 2021-10-18 | 52.84.121.124 (ClassC) |
| 2021-10-18 | 52.84.121.18 (ClassC) |
| 2024-07-10 | 204.246.191.69 (ClassC) |
| 2024-12-30 | 204.246.191.11 (ClassC) |
| 2025-08-23 | 3.175.34.43 (ClassC) |
| Date | Domain | IP |
| api.seibii.co.jp | 2024-02-24 | 52.196.166.189 |
| admin.seibii.co.jp | 2024-09-14 | 104.26.14.207 |
| assets.seibii.co.jp | 2024-07-10 | 204.246.191.69 |