Wikipedia's technical logs indicate that this user account has been or may be used abusively. It has been blocked indefinitely to prevent abuse.
If you think there are good reasons why you should be unblocked, you should review the guide to appealing blocks, and then appeal your block by adding the following text below this notice: {{unblock|Your reason here ~~~~}}. Note that anything you post in your unblock request will be public. You may instead email the Arbitration Committee at arbcom-en@wikimedia.org with your username and appeal.

Administrators: CheckUsers have access to confidential system logs not accessible by the public or by administrators due to the Wikimedia Foundation's privacy policy. Therefore, a Checkuser must be consulted before this block can be removed. Administrators undoing checkuser blocks without permission or the prior approval from a checkuser risk having their administrator rights removed by the Arbitration Committee (per this announcement).