| Date | IP Address |
| 2024-11-13 | 208.91.113.36 (ClassC) |
| 2026-02-21 | 208.91.113.35 (ClassC) |
| Date | Domain | IP |
| mail.fortinet-us.com | 2025-07-04 | 208.91.113.35 |
| smtp.fortinet-us.com | 2025-05-02 | 208.91.113.218 |
| autodiscover.fortinet-us.com | 2024-11-13 | 208.91.113.36 |
| www.fortinet-us.com | 2024-07-09 | 3.139.151.63 |