| April 2009 | ||
| 03/04/09 | The alliance CZA was founded. | |
Founding members::  Alp_2 and Rocco92. | ||
 The alliance reaches a population more than 100. | ||
| 04/04/09 | Joining of:Endodontics. | |
| 05/04/09 | Joining of:Shazle. | |
| 07/04/09 | Deletion of:Endodontics. | |
| 08/04/09 | Joining of:SPQR. | |
| 14/04/09 | Joining of:cibox. | |
| 16/04/09 | The alliance reaches a population more than 1,000. | |
| 25/04/09 | Leaving of:SPQR and cibox. | |
| 26/04/09 | Leaving of:Alp_2 and Rocco92. | |