| Date | IP Address |
| 2021-06-05 | 104.250.44.3 (ClassC) |
| 2025-09-18 | 183.2.166.131 (ClassC) |
| 2025-10-01 | 42.123.107.33 (ClassC) |
| 2025-10-04 | 42.7.50.3 (ClassC) |
| 2025-10-22 | 113.16.211.5 (ClassC) |
| 2025-11-04 | 220.167.9.131 (ClassC) |
| 2025-11-16 | 180.163.132.90 (ClassC) |
| 2025-12-03 | 113.96.142.9 (ClassC) |
| 2026-01-02 | 119.101.148.132 (ClassC) |
| 2026-02-09 | 180.163.132.88 (ClassC) |
| Date | Domain | IP |
| c.cdn02.duolebo.com.azchcdnh.com | 2025-12-25 | 42.123.107.33 |
| c.cdn03.duolebo.com.azchcdnh.com | 2025-12-25 | 42.7.50.3 |
| c.cdn04.duolebo.com.azchcdnh.com | 2025-09-18 | 183.2.166.131 |
| c.cdn07.duolebo.com.azchcdnh.com | 2025-12-25 | 113.96.142.9 |
| c.cdn08.duolebo.com.azchcdnh.com | 2025-07-20 | 125.89.169.8 |