| Date | IP Address |
| 2017-08-07 | 52.196.69.144 (ClassC) |
| 2024-08-02 | 3.114.138.236 (ClassC) |
| 2024-09-02 | 54.64.192.64 (ClassC) |
| 2024-09-13 | 54.150.155.102 (ClassC) |
| 2024-10-06 | 54.95.191.239 (ClassC) |
| 2024-10-18 | 54.150.88.224 (ClassC) |
| 2024-12-27 | 54.199.36.143 (ClassC) |
| 2025-01-09 | 35.78.12.149 (ClassC) |
| 2025-01-26 | 18.176.117.243 (ClassC) |
| Date | Domain | IP |
| assets-staging.gakuseikaikan-tokyo.com | 2024-12-12 | 108.138.94.20 |
| assets.gakuseikaikan-tokyo.com | 2023-12-11 | 99.84.66.21 |
| www.gakuseikaikan-tokyo.com | 2024-10-18 | 52.199.172.66 |