| Date | IP Address |
| 2024-12-04 | 52.68.196.101 (ClassC) |
| 2025-11-01 | 57.181.12.240 (ClassC) |
| 2025-11-13 | 18.180.210.141 (ClassC) |
| 2025-11-30 | 52.196.101.69 (ClassC) |
| Date | Domain | IP |
| engineering.ostechnology.co.jp | 2025-05-27 | 3.115.155.199 |
| solutions.ostechnology.co.jp | 2025-05-27 | 52.193.170.123 |
| rdps.ostechnology.co.jp | 2025-11-10 | 18.180.210.141 |
| rd-recruit.ostechnology.co.jp | 2025-11-01 | 57.181.12.240 |
| www.ostechnology.co.jp | 2025-05-07 | 20.46.190.59 |