| Date | IP Address |
| 2022-08-29 | 104.18.36.231 (ClassC) |
| 2023-08-29 | 60.9.4.77 (ClassC) |
| 2025-05-08 | 172.64.149.54 (ClassC) |
| 2025-06-18 | 113.16.212.122 (ClassC) |
| 2025-07-18 | 116.179.52.204 (ClassC) |
| 2026-01-20 | 117.168.151.126 (ClassC) |
| Date | Domain | IP |
| paxlovid.pfizerforprofessional.com | 2025-11-22 | 112.49.49.147 |
| estimattr.pfizerforprofessional.com | 2025-05-08 | 172.64.149.54 |