| Date | IP Address |
| 2023-08-26 | 172.64.145.31 (ClassC) |
| 2024-06-17 | 104.18.42.225 (ClassC) |
| 2024-08-08 | 104.18.28.177 (ClassC) |
| 2025-07-08 | 104.18.34.127 (ClassC) |
| 2025-11-30 | 172.64.153.129 (ClassC) |
| Date | Domain | IP |
| paxaes.pfizersafetyreporting.com | 2025-08-01 | 172.64.153.129 |
| www.pfizersafetyreporting.com | 2024-06-06 | 172.64.145.31 |