| Property | Value |
| Organization | 北京多邻国科技有限公司 |
| ling.ma@duolingo.com | |
| NameServer | dns8.hichina.com |
| Date | IP Address |
| 2015-04-27 | 184.72.124.184 (ClassC) |
| 2025-03-15 | 139.196.36.248 (ClassC) |
| 2025-05-13 | 110.75.170.67 (ClassC) |
| Date | Domain | IP |
| ios-api-2.duolingo.cn | 2024-12-17 | 139.196.36.248 |
| api2.duolingo.cn | 2025-01-29 | 139.196.36.248 |
| domestic-static.duolingo.cn | 2023-12-03 | 163.181.66.110 |
| grade-static.duolingo.cn | 2024-03-18 | 180.163.207.105 |
| englishtest-static.duolingo.cn | 2024-03-18 | 180.163.207.105 |
| api.duolingo.cn | 2023-08-31 | 44.196.83.126 |
| android-api.duolingo.cn | 2025-03-23 | 139.196.36.248 |
| testcenter.duolingo.cn | 2024-09-07 | 100.25.57.221 |
| localization-duostrings.duolingo.cn | 2024-07-28 | 61.170.79.221 |
| www.duolingo.cn | 2025-03-15 | 139.196.36.248 |