| Date | IP Address |
| 2021-08-14 | 13.32.215.11 (ClassC) |
| 2024-07-05 | 18.161.6.7 (ClassC) |
| 2024-12-24 | 3.163.189.89 (ClassC) |
| 2025-06-22 | 204.246.191.57 (ClassC) |
| 2025-06-28 | 204.246.191.2 (ClassC) |
| 2025-07-09 | 204.246.191.70 (ClassC) |
| 2026-01-10 | 18.161.6.73 (ClassC) |
| Date | Domain | IP |
| dev-nsd.freeserial.cmoa.jp | 2024-09-13 | 99.84.66.85 |
| unittest.dev-nsd.freeserial.cmoa.jp | 2024-07-05 | 18.161.6.7 |
| stg.freeserial.cmoa.jp | 2024-11-25 | 99.84.66.34 |
| app1.dev-sol.freeserial.cmoa.jp | 2023-12-27 | 3.163.24.109 |