| Date | IP Address |
| 2021-08-29 | 143.204.0.61 (ClassC) |
| 2021-08-29 | 143.204.0.9 (ClassC) |
| 2023-06-15 | 99.84.9.113 (ClassC) |
| 2024-09-08 | 18.161.6.26 (ClassC) |
| 2025-05-12 | 18.161.6.35 (ClassC) |
| 2025-08-27 | 18.172.170.11 (ClassC) |
| 2026-03-01 | 18.161.6.125 (ClassC) |
| Date | Domain | IP |
| api.mailmasker.com | 2024-09-30 | 3.163.24.58 |
| app.mailmasker.com | 2026-01-28 | 18.161.6.53 |
| www.mailmasker.com | 2024-09-08 | 18.161.6.26 |