| Date | IP Address |
| 2021-07-17 | 65.8.48.125 (ClassC) |
| 2024-06-29 | 3.163.24.89 (ClassC) |
| 2024-07-22 | 3.163.24.21 (ClassC) |
| 2024-09-30 | 3.163.158.16 (ClassC) |
| 2025-01-26 | 3.163.158.9 (ClassC) |
| Date | Domain | IP |
| mx10.groundschool.com | 2024-06-11 | 3.163.24.13 |
| captiveportal101.groundschool.com | 2024-06-29 | 3.163.24.89 |
| mail9.groundschool.com | 2024-02-16 | 3.163.24.39 |
| comune.groundschool.com | 2024-02-20 | 3.163.24.13 |
| pilotrise.groundschool.com | 2024-08-08 | 3.163.24.39 |
| auth.groundschool.com | 2024-03-10 | 204.246.191.70 |
| 3423069cfi.groundschool.com | 2024-08-13 | 3.163.24.28 |
| api.groundschool.com | 2024-06-07 | 204.246.191.69 |
| flyfallbrook.groundschool.com | 2024-07-28 | 3.163.24.61 |
| faa-ppl.groundschool.com | 2024-03-15 | 3.163.24.61 |
| cdn.groundschool.com | 2024-01-11 | 204.246.191.82 |
| blackhoundaviation.groundschool.com | 2024-09-19 | 3.163.24.28 |
| aboveaviation.groundschool.com | 2024-02-29 | 13.227.74.23 |
| art.groundschool.com | 2024-11-29 | 3.163.24.28 |
| www.groundschool.com | 2024-09-24 | 204.246.191.69 |