| Date | IP Address |
| 2018-07-03 | 104.237.133.82 (ClassC) |
| 2019-08-18 | 35.187.49.71 (ClassC) |
| 2023-08-26 | 104.21.27.73 (ClassC) |
| 2025-01-15 | 104.21.48.1 (ClassC) |
| 2025-01-15 | 104.21.64.1 (ClassC) |
| 2025-01-15 | 104.21.80.1 (ClassC) |
| 2025-01-15 | 104.21.96.1 (ClassC) |
| 2025-03-28 | 104.21.16.1 (ClassC) |
| 2025-04-03 | 104.21.112.1 (ClassC) |
| 2025-09-13 | 104.21.32.1 (ClassC) |
| 2025-10-23 | 172.67.169.12 (ClassC) |
| Date | Domain | IP |
| courses.istacktraining.com | 2025-09-10 | 172.64.152.97 |