To find your account number, look at the top of a bill or in your online profile. It is the number your new carrier asks for when you move your phone number over, and it is not the same as your phone number or your account PIN.
You need it for one job. When you port a number, the new carrier sends the old one your account number and a Number Transfer PIN, and both have to match. How to get the PIN is in our port your number guide.
Where each carrier puts it
| Carrier | Where the account number is |
|---|---|
| Verizon | At the top of your paper bill, or at the top of your Profile page in My Verizon |
| AT&T | On your account overview online, under “Welcome back”. On a paper bill, under the page number or issue date |
| T-Mobile | “On your T-Mobile account or bill” |
| Google Fi | Account, Manage plan, Leave Google Fi, Transfer your number, then Get Transfer Info shows the account number and PIN together |
| US Mobile | Not shown in the app. Contact support and they give you the account number and PIN after checking your identity |
Each row is from the carrier’s own support pages, read on October 8, 2026.
Prepaid brands are the hard ones
We looked on the support sites of Cricket, Metro by T-Mobile, Boost Mobile, Straight Talk, Tracfone, Mint Mobile and Visible and did not find a page that says where the account number is.
What those brands do publish helps a little:
- Cricket says you need “a Number Transfer PIN and your account number, not your account PIN”. It gives the PIN by dialing *PORT. For the account number, sign in to your account or call 1-800-CRICKET.
- Boost Mobile handles port-outs by phone, at (833) 502-6678.
- Straight Talk has a “Request Transfer PIN” page in My Account.
For any of them, the reliable route is to contact support, say you are transferring your number out, and ask for two things by name: the account number and the Number Transfer PIN.
Three numbers people mix up
The account number identifies your account with the carrier. This is the one the new carrier wants.
The account PIN or passcode is what you use to prove who you are when you call your carrier. Do not give it to the new carrier. AT&T says to share “only” the transfer PIN “and not your account passcode”.
The Number Transfer PIN is a temporary code made for one transfer. It expires in days.
Before you ask
Have the phone in your hand and the line active. Several carriers send the PIN by text to the line being moved, and Verizon and T-Mobile issue it only to the account owner.