Register for an online account View and manage your bill, services and features online with AT&T Account Management. Register now! To register your account, you will need the following information:
Main telephone number.
An Online Registration Code provided to you by AT&T.
In order to obtain your Online Registration Code, you will need to provide the following information:
The main telephone number.
The 3-digit customer code, which can be found on your bill following your main telephone number.