| Date | IP Address |
| 2020-02-27 | 13.226.129.70 (ClassC) |
| 2024-11-24 | 3.163.24.96 (ClassC) |
| 2025-04-14 | 3.163.24.73 (ClassC) |
| 2025-05-20 | 52.84.162.115 (ClassC) |
| 2025-08-26 | 3.163.24.74 (ClassC) |
| 2025-11-11 | 3.169.173.74 (ClassC) |
| Date | Domain | IP |
| callisto.mynavi-seizo.jp | 2024-07-04 | 3.163.24.97 |
| www.mynavi-seizo.jp | 2024-11-24 | 3.163.24.96 |