| Date | IP Address |
| 2014-11-20 | 104.28.30.23 (ClassC) |
| 2019-01-03 | 104.28.31.23 (ClassC) |
| 2024-09-12 | 172.66.43.127 (ClassC) |
| 2025-06-28 | 104.26.13.170 (ClassC) |
| 2025-07-19 | 104.26.12.170 (ClassC) |
| 2026-02-05 | 172.67.71.155 (ClassC) |
| Date | Domain | IP |
| tracking.yclas.com | 2025-04-29 | 54.38.226.140 |
| cdn.yclas.com | 2014-11-20 | 104.28.30.23 |
| demo.yclas.com | 2024-01-07 | 172.66.43.127 |
| content.yclas.com | 2015-02-24 | 104.28.30.23 |
| www.yclas.com | 2014-12-03 | 104.28.30.23 |