| Date | IP Address |
| 2018-08-28 | 143.204.15.15 (ClassC) |
| 2020-12-06 | 143.204.217.126 (ClassC) |
| 2024-03-11 | 204.246.191.117 (ClassC) |
| 2024-06-24 | 3.163.24.128 (ClassC) |
| 2024-07-02 | 204.246.191.46 (ClassC) |
| 2024-07-30 | 204.246.191.14 (ClassC) |
| 2024-11-25 | 3.163.24.93 (ClassC) |
| 2025-04-30 | 3.175.34.59 (ClassC) |
| 2025-11-03 | 3.175.34.86 (ClassC) |
| 2025-11-29 | 3.175.34.33 (ClassC) |
| Date | Domain | IP |
| demo.checkbook.io | 2026-02-07 | 3.169.173.98 |
| app.checkbook.io | 2024-02-05 | 204.246.191.37 |
| www.checkbook.io | 2024-03-11 | 204.246.191.117 |