| Date | IP Address |
| 2023-06-22 | 36.25.245.44 (ClassC) |
| 2025-09-18 | 112.47.51.147 (ClassC) |
| 2025-09-22 | 112.47.51.146 (ClassC) |
| 2025-09-26 | 112.47.51.148 (ClassC) |
| 2025-11-27 | 112.47.52.51 (ClassC) |
| Date | Domain | IP |
| b.cdn10.duolebo.com.bsclink.cn | 2025-11-17 | 112.47.52.51 |
| b.cdn08.duolebo.com.bsclink.cn | 2025-09-18 | 112.47.51.147 |