Check your number transfer eligibility online
From the Transfer Your Number to AT&T page, enter the phone number you want to transfer and follow the prompts to check eligibility. If the number is eligible to transfer, you can shop online or visit an AT&T store to complete your number transfer and activate new AT&T service. Check the status of a transfer in progress
From the Number Transfer/Port Status page, enter the number you’re transferring to AT&T and follow the prompts to check port status.