| Date | IP Address |
| 2021-10-06 | 122.228.74.136 (ClassC) |
| 2021-10-06 | 122.228.95.139 (ClassC) |
| 2022-09-26 | 58.216.118.230 (ClassC) |
| 2025-01-12 | 180.163.146.105 (ClassC) |
| 2025-02-22 | 180.163.146.102 (ClassC) |
| 2025-09-16 | 180.163.146.118 (ClassC) |
| 2025-09-22 | 61.160.192.98 (ClassC) |
| Date | Domain | IP |
| app.log.entstudy.com | 2025-06-20 | 47.95.85.43 |
| a.cdn.entstudy.com | 2025-01-12 | 180.163.146.105 |