| Date | IP Address |
| 2025-09-20 | 35.73.139.236 (ClassC) |
| Date | Domain | IP |
| idc.ikubunkan.ed.jp | 2024-11-25 | 35.75.38.228 |
| sag.ikubunkan.ed.jp | 2025-08-21 | 35.73.187.64 |
| sah.ikubunkan.ed.jp | 2025-08-25 | 52.196.185.190 |
| sam.ikubunkan.ed.jp | 2025-09-20 | 35.73.139.236 |
| idm.ikubunkan.ed.jp | 2025-09-02 | 52.68.27.237 |
| sso.ikubunkan.ed.jp | 2024-11-25 | 35.75.46.41 |
| idc-test.ikubunkan.ed.jp | 2024-11-25 | 18.177.110.17 |