| Date | IP Address |
| 2025-06-30 | 18.165.9.96 (ClassC) |
| 2025-12-08 | 3.169.173.16 (ClassC) |
| Date | Domain | IP |
| www.ikeda.hokkaido-c.ed.jp | 2025-10-27 | 3.175.34.66 |
| www.bifuka.hokkaido-c.ed.jp | 2025-10-26 | 3.175.34.66 |
| www.sankakuyama.hokkaido-c.ed.jp | 2024-10-05 | 3.163.24.48 |
| www.naganuma.hokkaido-c.ed.jp | 2025-12-06 | 3.169.173.62 |
| www.eniwakita.hokkaido-c.ed.jp | 2025-09-15 | 3.175.34.78 |
| www.oshamanbe.hokkaido-c.ed.jp | 2025-10-23 | 3.169.173.62 |
| www.t-base.hokkaido-c.ed.jp | 2024-05-12 | 108.138.94.37 |
| www.bihoro-high.hokkaido-c.ed.jp | 2025-11-16 | 3.175.34.66 |
| www.kushiro-th.hokkaido-c.ed.jp | 2025-11-18 | 3.169.173.48 |
| www.b-shoei.hokkaido-c.ed.jp | 2025-08-27 | 3.175.34.38 |
| www.rumoi.hokkaido-c.ed.jp | 2025-12-08 | 3.169.173.16 |
| www.fukatoko.hokkaido-c.ed.jp | 2025-09-22 | 3.175.34.78 |
| www.kamishihoro.hokkaido-c.ed.jp | 2025-10-23 | 3.169.173.118 |
| www.obihirosanjyo.hokkaido-c.ed.jp | 2024-08-14 | 18.244.214.4 |
| contents.hokkaido-c.ed.jp | 2024-10-14 | 108.138.94.32 |
| www.muroranrou.hokkaido-c.ed.jp | 2024-07-10 | 3.163.24.6 |
| www.obihirohakuyou.hokkaido-c.ed.jp | 2024-10-02 | 99.84.66.49 |
| www.monbetsu.hokkaido-c.ed.jp | 2025-10-23 | 3.169.173.118 |
| www.sapporoatsubetsu.hokkaido-c.ed.jp | 2025-08-07 | 204.246.191.58 |