| Date | IP Address |
| 2024-06-03 | 35.74.105.163 (ClassC) |
| 2024-07-15 | 35.77.174.252 (ClassC) |
| 2025-01-30 | 54.65.110.109 (ClassC) |
| Date | Domain | IP |
| hiroba.jitco.or.jp | 2024-11-10 | 162.43.23.45 |
| support.jitco.or.jp | 2024-06-03 | 35.74.105.163 |
| www.jitco.or.jp | 2023-11-01 | 52.68.146.239 |
| apply.jitco.or.jp | 2024-11-11 | 202.214.113.92 |