| Date | IP Address |
| 2021-01-23 | 23.33.85.235 (ClassC) |
| 2022-02-15 | 23.56.3.96 (ClassC) |
| 2024-03-23 | 23.215.176.147 (ClassC) |
| 2024-08-08 | 23.40.41.50 (ClassC) |
| 2024-10-04 | 23.215.176.104 (ClassC) |
| 2025-07-16 | 23.40.41.38 (ClassC) |
| 2025-08-02 | 23.219.78.73 (ClassC) |
| Date | Domain | IP |
| mdc.pd.study.jp | 2024-07-28 | 23.216.147.64 |
| yakuzemi.pd.study.jp | 2024-06-13 | 23.215.176.137 |
| kanpuri.pd.study.jp | 2022-02-15 | 23.56.3.96 |
| jpl.pd.study.jp | 2024-03-13 | 23.216.147.68 |