| Date | IP Address |
| 2019-11-12 | 13.33.73.98 (ClassC) |
| 2020-08-03 | 99.86.116.20 (ClassC) |
| 2024-02-22 | 18.161.6.122 (ClassC) |
| 2024-03-29 | 13.35.122.72 (ClassC) |
| 2025-01-17 | 52.185.177.238 (ClassC) |
| Date | Domain | IP |
| contents.learn-s.co.jp | 2024-03-08 | 18.161.6.101 |
| dev-connect.learn-s.co.jp | 2024-09-29 | 45.60.11.223 |
| www.learn-s.co.jp | 2024-02-22 | 18.161.6.122 |