| Date | IP Address |
| 2019-05-01 | 118.212.233.155 (ClassC) |
| 2019-07-12 | 1.31.128.218 (ClassC) |
| 2019-07-22 | 118.212.233.175 (ClassC) |
| 2025-11-17 | 42.62.66.83 (ClassC) |
| Date | Domain | IP |
| appwb.langlib.com | 2025-07-16 | 42.62.66.83 |
| freetrial.langlib.com | 2025-06-27 | 42.62.66.83 |
| apptoefl.langlib.com | 2025-05-13 | 42.62.66.83 |
| appcet.langlib.com | 2025-11-17 | 42.62.66.83 |
| v.langlib.com | 2024-07-26 | 180.163.145.205 |
| www.langlib.com | 2025-10-11 | 42.62.66.83 |
| proxy.langlib.com | 2025-08-06 | 42.62.66.83 |