| Date | IP Address |
| 2018-08-10 | 52.84.13.15 (ClassC) |
| 2018-08-10 | 52.84.13.239 (ClassC) |
| 2018-08-10 | 52.84.13.61 (ClassC) |
| 2018-08-10 | 52.84.13.92 (ClassC) |
| 2019-07-13 | 13.249.94.13 (ClassC) |
| 2019-07-13 | 99.84.170.83 (ClassC) |
| 2019-07-13 | 13.249.94.176 (ClassC) |
| 2019-07-13 | 13.249.94.63 (ClassC) |
| 2019-07-13 | 13.249.94.67 (ClassC) |
| 2019-07-13 | 99.84.170.27 (ClassC) |
| 2020-06-15 | 52.84.53.41 (ClassC) |
| 2020-06-15 | 52.84.53.53 (ClassC) |
| 2021-05-17 | 54.230.18.25 (ClassC) |
| 2021-05-17 | 13.225.230.64 (ClassC) |
| 2025-01-12 | 3.163.24.89 (ClassC) |
| 2025-01-27 | 108.138.94.27 (ClassC) |
| 2025-03-25 | 108.138.94.20 (ClassC) |
| 2025-05-05 | 99.84.66.108 (ClassC) |
| 2025-12-09 | 3.163.24.87 (ClassC) |
| Date | Domain | IP |
| assets-staging.gakuseikaikan-tokyo.com | 2025-01-12 | 3.163.24.89 |
| assets.gakuseikaikan-tokyo.com | 2023-12-11 | 99.84.66.21 |
| www.gakuseikaikan-tokyo.com | 2024-10-18 | 52.199.172.66 |