Dial *PORT
From your AT&T phone, dial *PORT and follow the prompts. You need your account passcode, and the PIN arrives by text.
How to get your AT&T transfer PIN
AT&T calls it a Number Transfer PIN. The user with primary online access requests it, it expires after 4 days (14 for business accounts), and it is the same for every number on the account.
Steps checked on October 14, 2026 against AT&T's support pages. Sources: AT&T support, AT&T account number.
At a glance
- Fastest
- Dial *PORT from the phone
- Online
- Profile > Settings > Transfer phone number
- Valid for
- 4 days (14 for business)
- First
- Turn off Wireless Account Lock
Get your AT&T Number Transfer PIN
Request it close to the day you start the port: it expires fast.
In your online account
Go to your account profile on att.com and sign in. Select Settings, scroll to Transfer phone number and select Request new PIN. The PIN shows on screen.
In the AT&T app
Tap your profile icon > Settings > Manage or remove account. Then tap Settings, scroll to Transfer phone number and select Request new PIN.
Online and in the app, only the user with primary online access can request it.
AT&T Business Wireless accounts
Only the primary user can request it, online or by contacting AT&T: a rep generates the PIN and emails it to you. *PORT and the app don't work for business accounts.
What you'll need
To port your number
Have these ready before you start. Each one has to match what AT&T has on file.
AT&T account number
In your online account under Welcome back or Profile > Account info, on your bill under the page number or issue date, or by calling 611.
Number Transfer PIN
The PIN you generate in the steps above.
Account holder name
Exactly as it appears on your bill.
Billing address
With the ZIP code and state your carrier has on file.
Your latest bill
A PDF of the most recent invoice.
Letter of authorization
We prepare it, you sign it in the app.
Before you start
Four things worth knowing
The details that save you a rejected request or a line with no service.
Don't cancel AT&T
Your line has to stay active until the port is done. Cancel early and the number is released, and the port fails.
How long the Number Transfer PIN lasts
It expires after 4 days (14 for business accounts). Requesting a new one cancels the old ones, so update the request with the latest.
How long it takes
In the US, a mobile number usually takes 2 to 4 business days and a landline 7 to 10. We tell you the date as soon as the carrier confirms it.
What it costs
AT&T doesn't charge for the PIN or for transferring the number. Allo charges nothing for the port either.
Why a port gets rejected
And how to avoid it
Almost every rejection comes down to one detail that doesn't match what the carrier has on file.
The name doesn't match
The most common cause. Enter the account holder exactly as it appears on your AT&T bill.
Wrong account number or PIN
AT&T's PIN expires after 4 days, and requesting a new one cancels the one you already gave. If yours has expired, generate a new one and update the request.
Wireless Account Lock is on
While Wireless Account Lock is on, AT&T blocks the number from leaving. Turn it off before you get the PIN.
A balance due or a cancelled line
An unpaid balance can hold up the port, and a cancelled line can't be ported until it is reactivated.
Bring your AT&T number to Allo
Free, and your line keeps ringing
With the PIN and the account number in hand, the port to Allo starts in the app. We deal with your carrier from there.
01Start the port in Allo
In the app, go to Settings > Numbers > Port a number and add your account number, PIN, account holder and billing address.
02We deal with AT&T
We confirm the number can move within 24 hours and email you at every step. Your current line keeps ringing until the switch.
03Your number, live on Allo
The day before, the number shows up in your account so you can set it up. On the day, it moves to Allo with no downtime.
AT&T porting questions
before you switch
An Allo agent picks up and puts you through to sales or support. It is the fastest demo on this page.
888-298-ALLOAT&T's steps checked on October 14, 2026. If anything has changed, AT&T's support page wins.
4 days from when you request it, or 14 days on a business account. If you request another one, the earlier ones stop working.
No. The account passcode protects your account, and you only need it to request the PIN with *PORT. Give your new carrier the Number Transfer PIN only.
No. AT&T says AT&T Prepaid accounts don't need a Number Transfer PIN.
In your online account under Welcome back or Profile > Account info; on your bill, under the page number or issue date; or by calling 611 from your AT&T phone (source).
Yes, for that line. Once the port is done, the number moves to Allo and the AT&T service on that line (calls, texts and data) ends. If you'd rather keep your plan, you can forward your calls to Allo instead of porting the number.
Nothing. Porting your number to Allo is free, and the number is part of your plan with no extra monthly fee. Your carrier may still bill what is left on a contract or a device payment plan.
Yes. Your number works as usual right up to the switch. You can also take a temporary Allo number to set everything up while you wait.
Calls move on the day of the switch. Outgoing texts can take up to 48 more hours while carriers update their routing. Allo numbers can't receive one-time passcodes (OTP), so keep another number for two-factor sign-ins.
Yes. You can port your number to another provider at any time, and Allo charges nothing for it. Try everything first with the 7-day free trial.