| Date | IP Address |
| 2018-02-06 | 52.84.27.23 (ClassC) |
| 2020-06-23 | 99.86.62.115 (ClassC) |
| 2020-06-23 | 99.86.62.14 (ClassC) |
| 2021-04-26 | 143.204.154.82 (ClassC) |
| 2024-07-12 | 204.246.191.40 (ClassC) |
| 2024-09-12 | 204.246.191.95 (ClassC) |
| 2024-12-05 | 3.163.165.78 (ClassC) |
| 2024-12-21 | 3.163.165.93 (ClassC) |
| 2025-04-14 | 204.246.191.96 (ClassC) |
| 2025-06-19 | 204.246.191.35 (ClassC) |
| 2025-08-15 | 99.84.66.72 (ClassC) |
| 2026-01-10 | 3.169.173.102 (ClassC) |
| Date | Domain | IP |
| portal.skillcheck.com | 2025-10-18 | 18.161.6.6 |
| webtest.skillcheck.com | 2024-07-12 | 204.246.191.40 |