| Date | IP Address |
| 2021-07-18 | 52.84.22.68 (ClassC) |
| 2022-03-17 | 143.204.39.72 (ClassC) |
| 2022-05-07 | 65.8.233.57 (ClassC) |
| 2022-05-07 | 65.8.233.125 (ClassC) |
| 2022-09-01 | 18.160.144.16 (ClassC) |
| 2023-08-04 | 18.160.143.12 (ClassC) |
| 2023-10-30 | 18.65.229.102 (ClassC) |
| 2024-01-09 | 18.65.229.21 (ClassC) |
| 2024-02-20 | 18.65.229.85 (ClassC) |
| 2024-02-27 | 18.65.229.36 (ClassC) |
| 2025-07-25 | 99.83.190.102 (ClassC) |
| 2025-08-13 | 75.2.70.75 (ClassC) |
| Date | Domain | IP |
| expenses.leighton.com | 2024-11-06 | 204.246.191.47 |
| www.leighton.com | 2023-10-30 | 204.246.191.15 |