| Date | IP Address |
| 2021-07-09 | 117.21.229.243 (ClassC) |
| 2024-09-11 | 180.163.207.111 (ClassC) |
| 2024-11-26 | 180.163.145.204 (ClassC) |
| 2025-03-10 | 61.170.80.224 (ClassC) |
| 2025-04-24 | 222.73.33.236 (ClassC) |
| 2026-02-01 | 101.89.125.244 (ClassC) |
| 2026-02-08 | 222.73.33.9 (ClassC) |
| Date | Domain | IP |
| oss-mas-ab-prod.yclassroom.com | 2024-10-30 | 114.80.179.238 |
| oss-mas-prod.yclassroom.com | 2024-09-11 | 180.163.207.111 |