Claude phone verification and the numbers Anthropic accepts
Claude asks every new account for a phone number from a supported location and sends a six-digit code by text only; there is no way to skip it. Anthropic refuses VoIP numbers, Google Voice, numbers created using apps and landlines, allows at most three Claude accounts per number, and doesn’t let you change the number later. You must also be physically in a supported location: a US number does not change where you are.
Checked by VerifyWith on
Anthropic’s phone rules at a glance
| Claude | |
|---|---|
| Needs a phone number? | Yes, every new account; no skipping |
| How the code arrives | Text message only |
| Code length | Six digits |
| Asks again later? | No; you log in by email link or Google |
| Accounts per number | Three at most |
| Its word on VoIP | Refused, with Google Voice, app numbers, landlines |
| Changing the number | Not possible once verified |
| Where you must be | Physically in a supported location |
From the Claude Help Center and Anthropic’s Usage Policy, read on 13 November 2026.
Does a US number help if you’re outside a supported location?
No. Anthropic’s help page says only people physically located in a supported location can create and use Claude accounts, and that it also requires a phone number from a supported location. The two rules apply together. The United States is on Anthropic’s list of supported locations, but a US number doesn’t put you there, and Anthropic’s Usage Policy forbids accessing its services in violation of its Supported Regions Policy. If you’re outside a supported location, a number from us is no use for Claude.
Where one helps is narrower: you are in a supported location and would rather not give Anthropic your personal number, or you want a work account kept apart from your own phone. Anthropic says the number is used only to verify the account and for nothing else.
This page is about verifying your own account. Letting Claude use a number for your tasks once you’re signed in is a separate subject, covered in how an AI agent receives a verification code.
The numbers Anthropic accepts
Anthropic accepts numbers from its supported locations only, and adds that “you cannot use VoIP numbers, Google Voice, phone numbers created using apps, landlines”, or any other number that can’t receive texts. At most three Claude accounts can be verified with one number. Its Usage Policy also forbids getting around the sign-up process, holding several accounts to avoid detection, and creating accounts automatically.
A number from us is a non-VoIP US number. Anthropic decides whether a given number passes; if the code never arrives, cancel within 24 hours.
Receiving Claude’s code on a number from us
Get a number for a year
Anthropic’s number can never be changed, so the length matters; the next section explains.
Enter it on Claude’s verification screen
When you first create your Claude account, it asks for your phone number. Choose the United States, type the ten digits and check them before you send: Claude texts a six-digit code to the number you enter.
Enter the code straight away
The text appears on the number’s page with the code picked out. Anthropic says the codes are temporary, so enter the most recent one as soon as it arrives.
How long to keep the number
A year ($34.99). Anthropic asks you to verify with a number you’ll have access to long term, and once the number is verified there is no way to change it. A shorter rental would receive the code, because the code is needed only once, but it goes against what Anthropic asks for.
Losing the number doesn’t lock you out: you log in with Google or with a link sent to your email, and Anthropic documents no use of the phone after verification. If a number has verified an account and you need it freed, Anthropic’s route is to log in to one of the accounts it verified and ask its Support team to unlink it.
If Claude’s code doesn’t arrive
Anthropic’s own steps, in order:
- Allow a few minutes. The text can take that long.
- After five minutes, click Try again to reset the box and enter the number again, making sure it is the right one.
- If the code still doesn’t come, or you see “Error sending code. Double check your phone number.”, Anthropic’s advice is to verify with a different phone number.
- If a code arrives but doesn’t work, request a fresh one and enter it the moment it comes.
Anthropic describes an error saying the number is already in use for a number that has reached the three-account limit. If no text reached the number from us, cancel it from its page within 24 hours of buying.
Questions people ask
- What if I don’t have a phone number from a supported location?
- Anthropic requires a number from a supported location and that you are physically in one. If you are in a supported location, you need a number that meets Anthropic’s rules; if you aren’t, Anthropic doesn’t allow you to create or use an account, whatever number you have.
- Can I change the phone number on my Claude account?
- No. Anthropic says there is no way to change the number once it has been verified, which is why it asks for one you’ll keep long term.
- How many Claude accounts can use one phone number?
- Three at most. To free a number, log in to one of the accounts it verified and ask Anthropic’s Support team to unlink it.
- Do I need my phone to log in to Claude?
- No. You log in with Google or with a login link sent to your email; if you open the link on another device, it shows a code to enter on the first one. The phone is used only to verify the account when you create it.
- Can Claude send the code by phone call or WhatsApp?
- Anthropic documents only a text message. Its help page mentions no call, WhatsApp or email option for the code.
Sources
Read on November 13, 2026. Prices and policies change; if something here is out of date, write to [email protected] and we’ll correct it.