| Date | IP Address |
| 2023-11-01 | 35.77.204.74 (ClassC) |
| 2024-03-26 | 3.115.182.147 (ClassC) |
| 2024-04-14 | 54.249.19.201 (ClassC) |
| 2024-04-22 | 35.75.67.145 (ClassC) |
| 2024-05-25 | 13.115.118.132 (ClassC) |
| 2024-07-08 | 18.180.171.24 (ClassC) |
| 2024-07-21 | 52.194.63.222 (ClassC) |
| 2024-08-29 | 52.196.45.161 (ClassC) |
| 2024-11-25 | 35.75.155.60 (ClassC) |
| 2025-01-18 | 18.177.27.197 (ClassC) |
| 2025-04-10 | 52.192.216.92 (ClassC) |
| 2025-04-30 | 54.150.222.146 (ClassC) |
| 2025-05-04 | 52.68.121.166 (ClassC) |
| 2025-05-09 | 52.194.172.138 (ClassC) |
| 2025-05-16 | 13.113.110.8 (ClassC) |
| 2025-08-16 | 35.74.93.105 (ClassC) |
| 2025-09-20 | 54.250.220.41 (ClassC) |
| 2025-10-15 | 57.182.134.122 (ClassC) |
| 2026-01-18 | 54.168.166.70 (ClassC) |
| Date | Domain | IP |
| heroku-attend.link-academy.co.jp | 2024-12-18 | 54.224.34.30 |
| form.link-academy.co.jp | 2025-10-14 | 54.64.107.178 |
| www.link-academy.co.jp | 2023-11-01 | 35.77.204.74 |