| Date | IP Address |
| 2022-06-21 | 108.156.107.7 (ClassC) |
| 2025-04-26 | 18.161.6.108 (ClassC) |
| 2025-05-28 | 3.163.189.63 (ClassC) |
| 2025-07-31 | 18.161.6.96 (ClassC) |
| 2025-10-24 | 18.161.6.56 (ClassC) |
| Date | Domain | IP |
| admin.stg.portal.cst-base.jp | 2024-06-11 | 35.79.73.219 |
| account.stg.portal.cst-base.jp | 2025-10-14 | 13.158.99.50 |
| api.account.stg.portal.cst-base.jp | 2025-04-26 | 18.161.6.108 |