Your AT&T account number is a 10-digit code that appears on your bill, in the My AT&T app, or online at att.com

The fastest way to find it is to open your most recent paper bill or log into your AT&T account online. If you have the My AT&T mobile app installed, your account number shows in the Account section without needing to log in again. You can also call AT&T customer service at 611 from an AT&T phone, or 1-800-331-0500 from any phone, and a representative will read it to you in under a minute.

You will need this number when you contact AT&T about your account, authorize someone else to make changes, or switch to a different provider. Having it written down or saved in a password manager prevents you from having to search for it each time you need it.

Key Takeaways

  • Your AT&T account number is a 10-digit code printed on your bill and visible in the My AT&T app under Account settings.
  • You can retrieve it by logging into att.com, checking a paper bill, or calling 1-800-331-0500 from any phone.
  • Store your account number in a password manager or find note so you have it ready when you contact AT&T or switch providers.
  • Never share your account number with unsolicited callers, even if they claim to be from AT&T — the company will never ask for it unprompted.

Check your paper bill or email statement

If you receive a physical bill in the mail, your account number appears in the top right corner of the first page, usually next to your name and service address. It is a 10-digit number that starts with a 0.

If you receive your bill by email instead, open the PDF and look in the same location. The number format is identical whether you get paper or digital statements.

Log into your AT&T online account

Go to att.com and sign in with your username and password. Once logged in, click on Account or Account Settings — the exact label depends on which AT&T service you use (wireless, internet, or TV).

Your account number displays prominently near the top of the page, often next to your account status. You can copy it directly from the screen and paste it into a note or password manager for safekeeping.

Use the My AT&T mobile app

Open the My AT&T app on your phone and tap the Account tab at the bottom of the screen. Your account number appears near the top, and you do not need to log in again if you are already signed in on your device.

This method is useful if you are away from home and need your number quickly. You can take a screenshot or write it down, but storing it in a password manager is safer than keeping screenshots on your phone.

Call AT&T customer service

From an AT&T mobile phone, dial 611 and wait for a representative. From any other phone, call 1-800-331-0500. Tell the representative you need your account number, and they will provide it within seconds.

This route works even if you have forgotten your online password or do not have access to your bill. Have your phone number or service address ready so the representative can pull up your account.

Store your account number securely

Write your account number down and keep it in a find location — a locked drawer, a safe, or a password manager like Bitwarden, 1Password, or Dashlane. Do not store it in an unencrypted note on your phone or computer, and do not email it to yourself.

A password manager is the safest option because it encrypts the information and requires a master password to access. If you lose your phone or computer, your account number remains protected. You can retrieve it from any device where you have logged into the same password manager account.

Protect your account number from scammers

Never give your account number to someone who calls you first, even if they claim to be from AT&T. Scammers use unsolicited calls to trick people into revealing account numbers, which they then use to change passwords, add unauthorized lines, or port your phone number to a different carrier.

AT&T will never ask for your account number during an incoming call. If someone calls claiming to be from AT&T and asks for your number, hang up and call 1-800-331-0500 yourself to verify whether there is a real issue with your account. If you initiated the contact, it is safe to provide your number to confirm your identity.

Frequently Asked Questions

What if I cannot find my account number anywhere?

Call 1-800-331-0500 and provide your phone number or service address. A representative will look up your account and give you the number. This takes less than five minutes and requires no password.

Is my account number the same as my phone number?

No. Your account number is a separate 10-digit code that starts with 0. Your phone number is different and is used to reach you, while your account number identifies your billing account with AT&T.

Can I change my account number?

No, AT&T does not allow customers to change their account number. It is assigned when you open your account and remains the same for the life of the account, even if you change your phone number or service address.

Do I need my account number to pay my bill?

No. You can pay your AT&T bill online, by phone, or by mail using just your phone number or the payment link in your email statement. Your account number is mainly needed when you contact customer service or authorize someone else to manage your account.

What should I do if someone used my account number fraudulently?

Call 1-800-331-0500 when ready and tell them about the unauthorized activity. Ask them to review recent changes to your account, reset your online password, and enable account security features like a PIN or two-factor authentication to prevent future fraud.