| Property | Value |
| Organization | Signum International S.a r.l Luxembourg Luzern Branch |
| domainadmintl@ef.com | |
| NameServer | ns2.domainnetwork.se |
| Date | IP Address |
| 2024-09-03 | 49.234.165.227 (ClassC) |
| 2024-10-26 | 42.81.54.44 (ClassC) |
| 2024-10-31 | 36.147.52.204 (ClassC) |
| 2024-11-18 | 123.6.90.108 (ClassC) |
| 2024-11-25 | 123.138.203.108 (ClassC) |
| 2024-12-12 | 111.170.27.140 (ClassC) |
| 2024-12-18 | 58.243.179.44 (ClassC) |
| 2024-12-23 | 61.159.93.76 (ClassC) |
| 2025-01-01 | 60.9.4.76 (ClassC) |
| 2025-01-20 | 124.239.240.172 (ClassC) |
| 2025-02-03 | 27.36.126.44 (ClassC) |
| 2025-02-22 | 150.138.153.108 (ClassC) |
| 2025-03-06 | 123.157.255.108 (ClassC) |
| 2025-04-13 | 183.231.34.29 (ClassC) |
| 2025-04-24 | 113.16.212.123 (ClassC) |
| 2025-05-02 | 111.48.88.113 (ClassC) |
| 2025-05-12 | 123.138.202.49 (ClassC) |
| 2025-06-29 | 60.13.99.140 (ClassC) |
| 2025-08-30 | 117.187.185.118 (ClassC) |
| 2025-09-12 | 124.225.84.76 (ClassC) |
| 2025-09-24 | 36.153.95.129 (ClassC) |
| 2025-11-12 | 42.236.124.83 (ClassC) |
| 2025-12-18 | 218.207.1.76 (ClassC) |
| 2026-01-01 | 27.36.125.28 (ClassC) |
| Date | Domain | IP |
| bc.ef.com.cn | 2022-04-17 | 108.156.120.114 |
| qa.learn.corporate.ef.com.cn | 2025-07-18 | 81.69.87.79 |
| liuxue.ef.com.cn | 2014-06-25 | 69.31.57.218 |
| school.englishlive.ef.com.cn | 2025-11-30 | 155.102.54.146 |
| lesson-player.ef.studio.ef.com.cn | 2025-11-22 | 155.102.54.147 |
| help.ef.com.cn | 2024-03-11 | 184.28.93.19 |
| classes.ef.com.cn | 2025-10-09 | 118.193.97.157 |
| careers.ef.com.cn | 2025-09-13 | 27.128.219.107 |
| myaccount.ef.com.cn | 2025-10-06 | 118.193.97.204 |
| www.ef.com.cn | 2025-12-19 | 27.128.219.99 |