| Property | Value |
| mg@challengelearning.com | |
| NameServer | SHADES13.RZONE.DE |
| Created | 1998-12-16 00:00:00 |
| Changed | 2015-12-14 00:00:00 |
| Expires | 2017-12-16 00:00:00 |
| Registrar | CRONON AG |
| Date | IP Address |
| 2015-07-21 | 82.150.141.30 (ClassC) |
| 2026-02-16 | 81.169.145.169 (ClassC) |