| Date | IP Address |
| 2023-10-13 | 44.195.224.200 (ClassC) |
| 2024-10-24 | 54.85.194.130 (ClassC) |
| 2025-01-14 | 52.4.228.52 (ClassC) |
| 2025-05-25 | 54.82.169.145 (ClassC) |
| 2025-08-22 | 52.20.129.15 (ClassC) |
| 2025-08-30 | 34.233.44.68 (ClassC) |
| 2026-01-24 | 35.168.31.109 (ClassC) |
| Date | Domain | IP |
| mta-sts.mlr2.mailonline2.com | 2023-10-13 | 44.195.224.200 |
| mta-sts.mlr4.mailonline2.com | 2023-10-13 | 44.195.224.200 |
| mta-sts.mlr5.mailonline2.com | 2023-10-13 | 34.231.67.123 |
| ftserussell.mailonline2.com | 2025-05-26 | 54.224.197.72 |
| nareit.mailonline2.com | 2025-03-05 | 34.200.179.58 |
| www.mailonline2.com | 2023-10-13 | 44.195.224.200 |