| Date | IP Address |
| 2024-11-30 | 54.64.39.155 (ClassC) |
| 2025-06-20 | 52.199.244.102 (ClassC) |
| 2025-08-19 | 3.115.76.92 (ClassC) |
| 2025-09-14 | 54.199.172.235 (ClassC) |
| 2025-12-26 | 35.75.126.161 (ClassC) |
| 2026-01-25 | 35.77.239.230 (ClassC) |
| Date | Domain | IP |
| lib-auth.fun.ac.jp | 2026-01-25 | 54.248.36.113 |
| students.fun.ac.jp | 2025-06-20 | 52.199.244.102 |
| parent.fun.ac.jp | 2025-06-20 | 52.199.244.102 |
| kyomu.fun.ac.jp | 2025-06-20 | 52.199.244.102 |
| www.fun.ac.jp | 2024-08-17 | 3.163.158.107 |