| Date | IP Address |
| 2021-03-31 | 80.231.126.185 (ClassC) |
| 2022-03-26 | 128.14.249.224 (ClassC) |
| 2022-03-26 | 8.25.82.214 (ClassC) |
| 2022-03-26 | 128.14.249.229 (ClassC) |
| 2022-03-26 | 128.14.249.230 (ClassC) |
| 2024-10-08 | 8.25.82.190 (ClassC) |
| 2025-04-08 | 8.38.121.248 (ClassC) |
| 2025-05-07 | 163.181.60.204 (ClassC) |
| 2025-08-06 | 163.181.66.205 (ClassC) |
| 2025-09-09 | 47.246.20.179 (ClassC) |
| 2025-09-25 | 163.181.246.231 (ClassC) |
| 2025-10-31 | 8.25.82.200 (ClassC) |
| 2025-12-08 | 155.102.55.44 (ClassC) |
| Date | Domain | IP |
| api.hello.ef.cn | 2025-03-24 | 183.131.87.124 |
| admin.hello.ef.cn | 2024-10-08 | 8.25.82.190 |
| assets.hello.ef.cn | 2023-11-29 | 124.239.240.173 |
| assets-aws.hello.ef.cn | 2024-12-27 | 116.177.236.45 |
| get.hello.ef.cn | 2025-05-07 | 117.168.151.102 |
| api-dev.hello.ef.cn | 2025-11-22 | 123.138.202.47 |
| teacher-dev.hello.ef.cn | 2025-10-03 | 60.9.5.126 |
| api-proxy.hello.ef.cn | 2024-12-27 | 218.207.1.77 |