| Date | IP Address |
| 2020-02-25 | 13.249.89.43 (ClassC) |
| 2020-02-25 | 13.249.89.6 (ClassC) |
| 2021-01-25 | 52.84.22.105 (ClassC) |
| 2021-01-25 | 52.84.22.2 (ClassC) |
| 2025-04-16 | 99.84.66.95 (ClassC) |
| 2025-07-31 | 99.84.66.100 (ClassC) |
| Date | Domain | IP |
| s3.pad.study.jp | 2024-04-30 | 52.219.136.230 |
| api.pad.study.jp | 2024-03-09 | 18.161.6.111 |
| contents.pad.study.jp | 2025-04-16 | 99.84.66.95 |