| Date | IP Address |
| 2015-03-12 | 205.234.218.25 (ClassC) |
| 2015-11-05 | 23.67.242.27 (ClassC) |
| 2016-12-07 | 198.47.108.34 (ClassC) |
| 2017-07-03 | 23.63.227.16 (ClassC) |
| 2020-07-05 | 184.24.97.50 (ClassC) |
| 2021-12-22 | 172.232.13.192 (ClassC) |
| 2023-04-11 | 23.213.26.81 (ClassC) |
| 2024-02-14 | 23.216.147.29 (ClassC) |
| 2024-09-19 | 23.216.147.30 (ClassC) |
| 2024-10-09 | 23.213.175.24 (ClassC) |
| 2024-11-25 | 104.96.203.49 (ClassC) |
| 2025-01-27 | 23.213.175.42 (ClassC) |
| 2025-04-21 | 23.46.228.12 (ClassC) |
| 2025-06-16 | 23.55.168.178 (ClassC) |
| Date | Domain | IP |
| biopharma.merck.co.kr | 2024-05-30 | 23.213.34.140 |
| www.merck.co.kr | 2015-03-12 | 205.234.218.25 |