| Date | IP Address |
| 2018-07-26 | 79.125.106.190 (ClassC) |
| 2019-06-09 | 104.18.16.64 (ClassC) |
| 2019-06-09 | 104.18.17.64 (ClassC) |
| 2021-09-14 | 104.18.18.20 (ClassC) |
| 2021-09-14 | 104.18.19.20 (ClassC) |
| 2022-04-19 | 172.64.152.7 (ClassC) |
| 2022-04-19 | 104.18.35.249 (ClassC) |
| 2023-08-31 | 172.64.145.66 (ClassC) |
| 2023-08-31 | 104.18.42.190 (ClassC) |
| 2024-08-04 | 104.18.0.148 (ClassC) |
| 2024-08-04 | 104.18.1.148 (ClassC) |
| 2025-05-27 | 104.18.34.165 (ClassC) |
| 2026-01-08 | 172.64.153.91 (ClassC) |
| Date | Domain | IP |
| www.pfizermedinfo.co.kr | 2025-05-27 | 104.18.34.165 |