You can manage multiple accounts with a single user ID. Learn how to add or remove accounts.
You can link these account types to an ID you already have: AT&T Wireless, AT&T Internet, AT&T Internet AirTM, Fixed Wireless Internet, DSL, AT&T Phone, Landline home phone, U-verse® TV, and AT&T Mail.
Linking accounts won’t combine your bills or bundle your services. It just gives you easy access with a single ID and password.