| Date | IP Address |
| 2020-08-02 | 13.112.174.156 (ClassC) |
| 2021-05-01 | 18.179.210.84 (ClassC) |
| 2022-06-07 | 35.75.169.108 (ClassC) |
| 2022-09-24 | 35.73.28.18 (ClassC) |
| 2022-12-27 | 52.193.21.250 (ClassC) |
| 2023-06-30 | 13.113.17.192 (ClassC) |
| 2023-07-23 | 52.199.89.163 (ClassC) |
| 2023-08-27 | 54.65.73.102 (ClassC) |
| 2023-12-21 | 54.248.145.11 (ClassC) |
| 2024-03-05 | 3.114.240.65 (ClassC) |
| 2024-07-05 | 54.248.32.132 (ClassC) |
| 2024-08-03 | 35.79.234.44 (ClassC) |
| 2024-12-01 | 35.79.165.186 (ClassC) |
| 2025-04-12 | 52.192.191.152 (ClassC) |
| 2025-05-04 | 35.73.35.88 (ClassC) |
| 2025-05-08 | 35.73.183.58 (ClassC) |
| 2025-06-24 | 52.199.38.64 (ClassC) |
| 2025-07-25 | 35.72.60.19 (ClassC) |
| 2025-08-22 | 35.75.137.120 (ClassC) |
| 2025-08-25 | 13.112.111.229 (ClassC) |
| 2025-09-12 | 18.179.122.98 (ClassC) |
| 2026-01-06 | 35.77.147.248 (ClassC) |
| 2026-02-27 | 43.207.20.156 (ClassC) |
| Date | Domain | IP |
| www.saizen.or.jp | 2026-02-18 | 57.181.12.128 |