| Date | IP Address |
| 2022-01-18 | 13.249.74.120 (ClassC) |
| 2024-09-13 | 99.84.66.97 (ClassC) |
| 2025-04-14 | 18.64.67.98 (ClassC) |
| 2025-09-25 | 99.84.66.99 (ClassC) |
| Date | Domain | IP |
| sys.rokin-hokkaido.or.jp | 2025-04-16 | 3.163.24.84 |
| saiyou.rokin-hokkaido.or.jp | 2024-08-07 | 3.163.24.84 |
| dev.rokin-hokkaido.or.jp | 2024-09-13 | 99.84.66.97 |
| www.rokin-hokkaido.or.jp | 2023-11-01 | 204.246.191.42 |