| Date | IP Address |
| 2022-07-26 | 104.18.2.36 (ClassC) |
| 2022-07-26 | 104.18.3.36 (ClassC) |
| 2024-12-27 | 116.177.236.45 (ClassC) |
| 2025-04-15 | 120.241.124.28 (ClassC) |
| 2025-05-09 | 117.168.151.102 (ClassC) |
| 2025-05-12 | 124.225.84.76 (ClassC) |
| 2025-06-13 | 117.187.185.116 (ClassC) |
| 2025-08-22 | 112.49.49.129 (ClassC) |
| 2025-10-06 | 123.138.202.47 (ClassC) |
| 2025-10-27 | 27.128.219.115 (ClassC) |
| 2025-12-13 | 183.131.87.124 (ClassC) |
| 2025-12-20 | 36.147.52.226 (ClassC) |
| 2025-12-26 | 183.214.166.148 (ClassC) |
| 2026-01-08 | 60.13.99.140 (ClassC) |
| 2026-02-06 | 42.236.124.76 (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 | 2025-10-07 | 150.138.182.86 |
| api-proxy.hello.ef.cn | 2024-12-27 | 218.207.1.77 |