| Date | IP Address |
| 2021-03-04 | 52.199.152.128 (ClassC) |
| 2021-05-31 | 13.112.188.163 (ClassC) |
| 2023-12-07 | 54.65.6.114 (ClassC) |
| 2024-12-22 | 54.150.190.85 (ClassC) |
| 2025-05-07 | 35.74.60.70 (ClassC) |
| 2025-06-21 | 3.114.71.113 (ClassC) |
| 2025-08-14 | 3.114.70.161 (ClassC) |
| 2025-09-08 | 57.182.184.198 (ClassC) |
| 2026-02-27 | 54.92.34.142 (ClassC) |
| Date | Domain | IP |
| www.ob-gyn.or.jp | 2024-11-10 | 18.179.153.219 |