Tool: 
USA AT&T - CLEAN/ACTIVE LINE | 
Price: 
8.00 USD
Sample:
355313080638xxx - Unlocked
352978092274xxx - Not supported

Note: This service is not INSTANT!
Result will be displayed in Order History page.

Description:  ⇒ Time: 1-10 Days
Unlock Service for iPhones locked to AT&T USA
Use APPLE iPHONE CARRIER to make sure device is locked to USA AT&T.
Supported Status:
- Looks like the device you want to unlock is active on another AT&T account.

 Services List