| Property | Value |
| NameServer | NS2.ANQUANBAO.COM |
| Created | 2007-09-07 00:00:00 |
| Changed | 2015-03-31 00:00:00 |
| Expires | 2016-09-07 00:00:00 |
| Registrar | GODADDY.COM, LLC |
| Date | IP Address |
| 2014-05-09 | 58.220.2.10 (ClassC) |
| 2014-06-10 | 101.226.200.182 (ClassC) |
| 2014-12-16 | 118.116.6.249 (ClassC) |
| 2015-05-16 | 183.57.148.246 (ClassC) |
| 2015-11-24 | 125.88.65.249 (ClassC) |
| 2025-01-29 | 143.198.151.68 (ClassC) |
| 2025-05-15 | 104.21.48.1 (ClassC) |
| Date | Domain | IP |
| static1.duobei.com | 2015-03-04 | 183.57.148.246 |
| course-img1.duobei.com | 2015-01-21 | 183.57.148.246 |
| avatar2.duobei.com | 2013-11-28 | 119.97.146.10 |
| playback4.duobei.com | 2014-12-16 | 118.116.6.249 |
| avatar4.duobei.com | 2013-11-28 | 119.97.146.10 |
| static.duobei.com | 2015-05-30 | 113.105.146.91 |
| img.duobei.com | 2014-08-11 | 199.192.75.57 |
| course-img.duobei.com | 2014-08-11 | 199.192.75.57 |
| playback.duobei.com | 2014-12-16 | 118.116.6.249 |
| avatar.duobei.com | 2014-08-13 | 199.192.75.57 |
| docs.duobei.com | 2015-05-16 | 183.57.148.246 |
| play-stat.duobei.com | 2013-08-07 | 223.202.2.75 |
| client.duobei.com | 2014-06-10 | 199.192.75.63 |
| www.duobei.com | 2015-04-09 | 61.147.92.97 |