| Date | IP Address |
| 2021-02-24 | 52.199.152.128 (ClassC) |
| 2023-10-25 | 54.248.222.222 (ClassC) |
| 2023-12-01 | 35.76.164.147 (ClassC) |
| 2024-04-12 | 18.179.107.51 (ClassC) |
| 2024-05-01 | 13.113.207.173 (ClassC) |
| 2024-09-18 | 3.163.24.77 (ClassC) |
| 2024-11-24 | 3.163.24.57 (ClassC) |
| 2024-12-26 | 3.165.160.14 (ClassC) |
| 2025-01-12 | 3.163.24.118 (ClassC) |
| 2025-02-01 | 3.163.24.100 (ClassC) |
| Date | Domain | IP |
| www.kaigo-calendar.jp | 2025-01-05 | 3.165.160.101 |