| Date | IP Address |
| 2020-11-11 | 65.8.233.129 (ClassC) |
| 2020-11-11 | 65.8.233.6 (ClassC) |
| 2020-12-21 | 13.224.215.57 (ClassC) |
| 2021-06-21 | 13.226.178.116 (ClassC) |
| 2021-08-02 | 52.85.89.13 (ClassC) |
| 2024-02-28 | 204.246.191.100 (ClassC) |
| 2024-08-27 | 18.161.6.94 (ClassC) |
| 2024-10-25 | 18.172.170.47 (ClassC) |
| 2025-03-20 | 18.172.170.48 (ClassC) |
| 2025-12-28 | 3.169.173.89 (ClassC) |
| 2026-01-21 | 3.169.173.88 (ClassC) |
| Date | Domain | IP |
| dev.info.jees-jlpt.jp | 2024-07-28 | 18.161.6.118 |