| Date | IP Address |
| 2021-10-30 | 3.114.32.231 (ClassC) |
| 2024-07-22 | 104.18.19.191 (ClassC) |
| 2024-12-22 | 172.64.153.206 (ClassC) |
| 2025-01-15 | 104.18.34.50 (ClassC) |
| Date | Domain | IP |
| fs1.jgrants-portal.go.jp | 2024-12-14 | 3.163.24.77 |
| fs2-mig.jgrants-portal.go.jp | 2024-09-08 | 204.246.191.73 |
| auth.jgrants-portal.go.jp | 2024-07-22 | 104.18.19.191 |
| mnt-auth.jgrants-portal.go.jp | 2025-01-06 | 104.18.34.50 |
| fs1-test.jgrants-portal.go.jp | 2024-07-26 | 18.161.6.50 |
| fs2-test.jgrants-portal.go.jp | 2024-02-14 | 18.161.6.116 |
| fs1-dev.jgrants-portal.go.jp | 2024-02-16 | 3.163.24.113 |
| www.jgrants-portal.go.jp | 2024-07-22 | 35.73.95.10 |