| Date | IP Address |
| 2017-09-08 | 54.173.38.5 (ClassC) |
| 2020-11-21 | 143.204.217.66 (ClassC) |
| 2021-06-05 | 13.225.209.21 (ClassC) |
| 2021-06-05 | 13.225.209.43 (ClassC) |
| 2024-10-04 | 99.84.66.85 (ClassC) |
| 2024-11-06 | 99.84.66.125 (ClassC) |
| 2025-07-05 | 108.138.94.77 (ClassC) |
| 2025-08-25 | 99.84.66.23 (ClassC) |
| 2026-01-08 | 3.175.34.68 (ClassC) |
| Date | Domain | IP |
| hcp.avonex.com | 2025-05-09 | 100.29.122.166 |
| www.avonex.com | 2024-10-04 | 99.84.66.85 |