| Date | IP Address |
| 2020-05-10 | 13.225.205.42 (ClassC) |
| 2020-05-10 | 13.225.205.45 (ClassC) |
| 2021-04-12 | 54.192.100.3 (ClassC) |
| 2024-03-08 | 3.163.158.20 (ClassC) |
| 2024-03-11 | 204.246.191.10 (ClassC) |
| 2024-08-19 | 18.161.6.112 (ClassC) |
| 2024-11-24 | 3.163.158.3 (ClassC) |
| 2025-01-12 | 204.246.191.31 (ClassC) |
| 2025-04-12 | 18.161.6.83 (ClassC) |
| 2025-08-12 | 204.246.191.83 (ClassC) |
| Date | Domain | IP |
| www.yamamikaikei.jp | 2024-09-01 | 204.246.191.110 |