| Date | IP Address |
| 2019-04-01 | 192.185.152.206 (ClassC) |
| 2025-04-07 | 104.26.0.19 (ClassC) |
| 2025-05-10 | 172.67.68.177 (ClassC) |
| 2026-01-17 | 104.26.1.19 (ClassC) |
| Date | Domain | IP |
| mail.rfgroup.com | 2025-03-16 | 104.26.0.19 |
| autodiscover.rfgroup.com | 2024-03-02 | 52.96.121.8 |
| www.rfgroup.com | 2025-03-06 | 104.26.0.19 |