| Date | IP Address |
| 2019-04-12 | 52.84.216.104 (ClassC) |
| 2019-04-12 | 52.84.216.13 (ClassC) |
| 2019-04-12 | 52.84.216.58 (ClassC) |
| 2021-02-07 | 143.204.226.17 (ClassC) |
| 2024-12-22 | 3.163.165.9 (ClassC) |
| 2025-07-07 | 18.161.6.2 (ClassC) |
| 2025-09-18 | 18.161.6.57 (ClassC) |
| 2026-02-15 | 18.161.6.69 (ClassC) |
| Date | Domain | IP |
| pmlearn.pressman.ne.jp | 2025-04-04 | 3.112.121.254 |
| www.pressman.ne.jp | 2025-01-26 | 3.163.165.9 |