| Date | IP Address |
| 2025-01-25 | 23.59.88.199 (ClassC) |
| 2025-03-23 | 23.213.34.82 (ClassC) |
| 2025-04-23 | 23.38.191.171 (ClassC) |
| 2025-05-17 | 104.103.69.96 (ClassC) |
| 2025-06-12 | 23.41.4.75 (ClassC) |
| 2026-01-31 | 23.41.4.91 (ClassC) |
| Date | Domain | IP |
| stg.mitsui-designtec.co.jp | 2025-06-17 | 23.41.4.91 |
| solution.mitsui-designtec.co.jp | 2025-12-28 | 23.41.4.91 |
| stg-solution.mitsui-designtec.co.jp | 2025-05-15 | 23.41.4.75 |
| recruit.mitsui-designtec.co.jp | 2025-06-16 | 23.41.4.23 |
| stg-recruit.mitsui-designtec.co.jp | 2025-09-22 | 23.41.4.91 |
| www.mitsui-designtec.co.jp | 2025-01-25 | 23.59.88.199 |