| Date | IP Address |
| 2023-08-26 | 150.138.153.109 (ClassC) |
| 2023-09-14 | 112.21.164.45 (ClassC) |
| 2024-05-09 | 183.131.87.173 (ClassC) |
| 2024-05-18 | 117.27.240.173 (ClassC) |
| 2024-06-21 | 124.225.84.77 (ClassC) |
| 2024-07-02 | 60.9.4.77 (ClassC) |
| 2024-07-21 | 116.163.41.140 (ClassC) |
| 2024-08-08 | 36.147.52.204 (ClassC) |
| 2024-11-04 | 116.163.41.141 (ClassC) |
| 2025-04-04 | 104.18.38.202 (ClassC) |
| 2025-04-28 | 172.64.149.54 (ClassC) |
| 2025-06-11 | 113.16.212.122 (ClassC) |
| 2025-07-17 | 27.36.125.25 (ClassC) |
| 2026-01-17 | 183.231.34.29 (ClassC) |
| Date | Domain | IP |
| paxlovid.pfizerforprofessional.com | 2025-11-22 | 112.49.49.147 |
| estimattr.pfizerforprofessional.com | 2025-05-08 | 172.64.149.54 |