| Date | IP Address |
| 2017-10-12 | 13.32.150.144 (ClassC) |
| 2017-12-19 | 52.222.220.51 (ClassC) |
| 2018-04-02 | 52.84.143.37 (ClassC) |
| 2018-06-10 | 13.32.67.28 (ClassC) |
| 2018-06-11 | 52.85.93.165 (ClassC) |
| 2018-06-11 | 52.85.93.189 (ClassC) |
| 2018-07-07 | 52.222.168.81 (ClassC) |
| 2018-08-24 | 205.251.219.22 (ClassC) |
| 2018-08-25 | 54.192.7.33 (ClassC) |
| 2018-08-25 | 54.192.7.84 (ClassC) |
| 2018-09-27 | 54.230.19.54 (ClassC) |
| 2019-01-21 | 52.84.146.122 (ClassC) |
| 2019-03-06 | 13.249.55.113 (ClassC) |
| 2019-08-05 | 52.84.141.4 (ClassC) |
| 2019-10-15 | 143.204.158.49 (ClassC) |
| 2020-06-29 | 23.219.36.160 (ClassC) |
| 2020-07-05 | 184.51.3.217 (ClassC) |
| 2020-07-12 | 184.50.239.159 (ClassC) |
| 2020-07-12 | 23.219.36.34 (ClassC) |
| 2023-07-19 | 23.53.34.56 (ClassC) |
| 2024-03-11 | 23.46.17.14 (ClassC) |
| 2024-06-03 | 23.46.17.51 (ClassC) |
| 2024-06-23 | 23.46.17.20 (ClassC) |
| 2024-08-06 | 23.46.17.16 (ClassC) |
| 2024-10-02 | 23.55.167.27 (ClassC) |
| 2024-12-29 | 23.46.228.164 (ClassC) |
| 2025-03-02 | 23.46.228.175 (ClassC) |
| 2025-04-09 | 23.202.47.72 (ClassC) |
| 2025-08-18 | 23.216.147.207 (ClassC) |
| 2025-08-28 | 23.216.147.196 (ClassC) |
| Date | Domain | IP |
| www2.gakujo.ne.jp | 2024-06-03 | 3.163.165.7 |
| staging.www2.gakujo.ne.jp | 2025-04-14 | 99.84.66.41 |
| img.gakujo.ne.jp | 2024-05-25 | 23.46.17.51 |
| staging.gakujo.ne.jp | 2024-07-28 | 23.46.17.20 |
| asahi.gakujo.ne.jp | 2024-11-19 | 46.51.244.145 |
| www.gakujo.ne.jp | 2023-07-19 | 23.53.34.56 |
| company.gakujo.ne.jp | 2024-11-24 | 54.65.119.130 |