| Date | IP Address |
| 2020-09-25 | 54.95.34.230 (ClassC) |
| 2021-02-09 | 52.194.116.241 (ClassC) |
| 2021-04-20 | 54.250.37.58 (ClassC) |
| 2022-07-19 | 3.115.94.219 (ClassC) |
| 2023-10-31 | 35.76.38.23 (ClassC) |
| 2024-04-10 | 52.193.36.138 (ClassC) |
| 2024-07-26 | 35.78.20.44 (ClassC) |
| 2024-10-06 | 35.78.53.182 (ClassC) |
| 2025-03-15 | 54.92.53.134 (ClassC) |
| 2025-04-17 | 52.196.225.161 (ClassC) |
| 2025-04-29 | 52.194.5.101 (ClassC) |
| Date | Domain | IP |
| www.yoshiikingaku.co.jp | 2024-10-06 | 18.178.197.100 |