| Date | IP Address |
| 2021-03-01 | 143.204.166.24 (ClassC) |
| 2021-11-01 | 143.204.154.49 (ClassC) |
| 2022-05-13 | 13.35.125.43 (ClassC) |
| 2024-05-02 | 99.86.229.117 (ClassC) |
| 2024-06-15 | 18.160.10.98 (ClassC) |
| 2024-11-21 | 108.138.246.79 (ClassC) |
| 2024-12-27 | 108.138.246.74 (ClassC) |
| 2025-01-20 | 108.138.246.47 (ClassC) |
| 2025-03-18 | 65.8.161.21 (ClassC) |
| 2025-04-05 | 108.138.246.15 (ClassC) |
| 2025-07-30 | 172.64.153.128 (ClassC) |
| Date | Domain | IP |
| www.pfizerimmunologypipeline.com | 2024-07-26 | 18.161.6.121 |