| Date | IP Address |
| 2025-08-31 | 35.186.251.135 (ClassC) |
| 2026-01-19 | 147.124.191.112 (ClassC) |
| Date | Domain | IP |
| sec-1.alpha.us.five9.net | 2025-09-09 | 35.190.55.143 |
| admin.alpha.us.five9.net | 2025-08-31 | 35.186.251.135 |
| architect.alpha.us.five9.net | 2025-07-22 | 35.186.251.135 |
| agentassist.alpha.us.five9.net | 2025-07-15 | 35.186.251.135 |
| sec-2.prod.us.five9.net | 2025-09-23 | 35.186.242.164 |
| sec-4.prod.us.five9.net | 2025-09-14 | 35.190.87.198 |
| webswing.prod.us.five9.net | 2025-09-21 | 35.190.125.68 |
| cdn.prod.us.five9.net | 2025-08-08 | 35.186.251.135 |
| admin.us.five9.net | 2025-12-04 | 35.186.251.135 |
| architect.us.five9.net | 2025-07-29 | 35.186.251.135 |
| agentassist.us.five9.net | 2025-11-28 | 35.186.251.135 |