| Date | IP Address |
| 2018-09-14 | 52.84.68.36 (ClassC) |
| 2018-09-14 | 52.84.68.87 (ClassC) |
| 2018-09-14 | 52.84.68.155 (ClassC) |
| 2018-09-14 | 52.84.68.161 (ClassC) |
| 2024-10-28 | 204.246.191.123 (ClassC) |
| 2024-11-11 | 204.246.191.78 (ClassC) |
| 2025-01-12 | 3.165.160.121 (ClassC) |
| 2025-01-20 | 204.246.191.37 (ClassC) |
| 2025-04-12 | 204.246.191.36 (ClassC) |
| 2025-08-24 | 99.84.66.70 (ClassC) |
| 2026-01-09 | 3.169.173.32 (ClassC) |
| 2026-01-21 | 3.169.173.101 (ClassC) |
| Date | Domain | IP |
| www.ptotst.ac.jp | 2024-10-12 | 3.165.160.50 |