| Date | IP Address |
| 2019-01-12 | 13.231.53.58 (ClassC) |
| 2023-08-27 | 54.248.3.149 (ClassC) |
| 2024-05-13 | 54.248.111.14 (ClassC) |
| 2024-09-02 | 35.79.185.12 (ClassC) |
| 2024-10-02 | 52.198.244.230 (ClassC) |
| 2024-10-24 | 175.41.221.174 (ClassC) |
| 2024-11-08 | 54.64.187.204 (ClassC) |
| 2024-11-15 | 54.95.111.217 (ClassC) |
| 2024-11-23 | 57.182.110.32 (ClassC) |
| 2024-12-26 | 52.198.10.95 (ClassC) |
| 2025-01-28 | 18.182.93.144 (ClassC) |
| 2025-03-13 | 3.163.24.101 (ClassC) |
| 2025-03-25 | 3.163.24.100 (ClassC) |
| 2025-04-28 | 3.175.34.90 (ClassC) |
| 2025-08-06 | 3.175.34.12 (ClassC) |
| Date | Domain | IP |
| api.resas.go.jp | 2025-03-05 | 204.246.191.126 |
| www.resas.go.jp | 2024-11-14 | 3.163.24.38 |