| Date | IP Address |
| 2020-11-02 | 54.230.18.199 (ClassC) |
| 2024-12-25 | 52.84.162.34 (ClassC) |
| 2025-01-15 | 52.84.162.22 (ClassC) |
| 2025-01-20 | 18.161.6.119 (ClassC) |
| 2025-05-24 | 18.161.6.50 (ClassC) |
| 2025-09-26 | 52.84.162.105 (ClassC) |
| 2025-10-17 | 18.161.6.35 (ClassC) |
| Date | Domain | IP |
| fs1.jgrants-portal.go.jp | 2025-01-21 | 3.163.165.23 |
| 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 | 2025-05-10 | 172.64.153.206 |
| fs1-test.jgrants-portal.go.jp | 2024-12-25 | 52.84.162.34 |
| fs2-test.jgrants-portal.go.jp | 2024-11-19 | 18.161.6.99 |
| 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 |