| Date | IP Address |
| 2015-01-26 | 149.126.72.96 (ClassC) |
| 2015-02-10 | 199.83.131.96 (ClassC) |
| 2015-04-01 | 149.126.77.96 (ClassC) |
| 2025-08-21 | 104.18.9.141 (ClassC) |
| 2026-02-10 | 104.18.8.141 (ClassC) |
| Date | Domain | IP |
| mail.edmundoptics.co.kr | 2025-05-18 | 111.223.106.28 |
| www.edmundoptics.co.kr | 2025-09-17 | 104.18.9.141 |