| Date | IP Address |
| 2024-01-31 | 13.114.23.135 (ClassC) |
| 2024-04-13 | 52.198.239.70 (ClassC) |
| 2024-04-20 | 35.74.110.249 (ClassC) |
| 2024-05-13 | 57.180.179.127 (ClassC) |
| 2024-08-23 | 54.178.219.115 (ClassC) |
| 2025-01-06 | 52.198.88.239 (ClassC) |
| Date | Domain | IP |
| admin-api.prod.ustime.jp | 2024-01-31 | 54.248.12.106 |
| manager-api.prod.ustime.jp | 2024-01-31 | 52.193.23.228 |
| user-api.prod.ustime.jp | 2024-01-31 | 52.193.23.228 |
| system.prod.ustime.jp | 2024-01-31 | 13.114.23.135 |