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Virtual phone numbers for Claude: verify your Anthropic account and keep your identity private

Service

Anthropic

Service

Anthropic

Country

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Country

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Available numbers

0 pcs.

Trusted by thousands of users worldwide

Currently there are no available numbers for the Anthropic.

Numbers activated

555

Countries available

190+

Average delivery rate

49%

If SMS doesn’t arriveSMS doesn’t arrive?

Auto-refund

Total activations

123

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Deliverability

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Why use a virtual number for Claude?

A virtual number for Claude lets you verify your Anthropic account without linking your personal phone.

Anthropic requires phone verification when you create a Claude account, according to Anthropic's official support documentation. The same requirement applies to personal accounts and to accounts used for development or testing. A virtual number from SMSFAST completes this step with a real, working number. Your personal phone stays off your Claude account.

Privacy and personal data

Your phone number identifies you across services. A virtual number from SMSFAST keeps your personal number off your Claude account. Developers and users with a separate work profile keep personal data private.

Manage multiple accounts

Anthropic applies a one-number-per-account policy for Claude. Developers and agencies managing separate accounts each need a distinct number. SMSFAST issues a new virtual number for every Claude account, no extra SIM cards.

No SIM card needed

A virtual number is a phone number that receives SMS online, without a physical SIM card. Select a country on SMSFAST, copy the number, and enter it in Claude's verification field. No carrier contract applies.

Instant activation

SMSFAST issues Claude-ready numbers instantly. Verification codes typically arrive within one minute of the request. Activation mode covers 20 to 90 minutes, enough for one registration without paying for longer access.

Instant auto-refund

If the Claude verification code does not arrive, click Cancel in your SMSFAST account. Your balance returns instantly, with no support ticket. Trying a different number or country then carries no financial cost.

Does Claude phone verification block virtual numbers?

Anthropic does not accept VoIP numbers or landlines for Claude verification, but it does accept non-VoIP mobile numbers.

Anthropic does not support VoIP numbers or landlines, according to Anthropic's official support documentation. Public VoIP services such as Google Voice are a common source of rejected numbers.

SMSFAST provides paid, exclusive non-VoIP numbers built on real carrier infrastructure, not software VoIP. Each SMSFAST number is assigned to one user at a time. Delivery rates by country appear on this page, so a higher-rate country improves your first attempt.

How to Receive SMS for Anthropic Verification with Virtual Numbers

Log in to your account

Either create a new account by clicking "Registration" or log in if you already have one.

Fund your balance

In the top right corner, click "+" and choose a convenient top-up method. Add the amount you need.

Select Anthropic

In the left menu, under "Select service," click "Anthropic". Then, choose your region from the list.

Purchase a number

Click "Buy" and wait a few seconds for your temporary number to be purchased and activated.

Get the number

Copy the phone number from the "Number" field to activate the service.

Enter the code

Wait for the one-time password (OTP) to appear in the "Code from SMS" field, then enter it in the Anthropic verification screen to complete registration.

You can also get messages by clicking the corresponding button in the "Actions" field for your SMS verification.

How to complete Claude phone verification with a virtual number

Verify a Claude account with a virtual number in four steps.

Step 1

Get your virtual number on SMSFAST.

Go to SMSFAST, select Anthropic from the service list, and choose a country. Copy the virtual number assigned to your account. You need it on the next screen in Claude's sign-up form.

Step 2

Enter the virtual number in Claude.

Open the Claude sign-up page and enter the SMSFAST number in the phone verification field. Include the country code exactly as shown. Then request the verification code.

Step 3

Receive and enter the verification code.

Return to your SMSFAST account and check the incoming SMS. The six-digit code from Anthropic typically arrives within one minute. Enter it on the Claude sign-up page before it expires.

Step 4

Complete your Claude account setup.

After Anthropic accepts the code, your Claude account is verified. Consider enabling two-factor authentication through an authenticator app rather than SMS alone. Note the number for future reference.

Free or paid – what’s right for you?

Both options let you receive an SMS code on a Anthropic number. The difference is in reliability and privacy.

Landline

Public numbers

$0 no sign-up needed

Available instantly

No registration

Private – messages visible to everyone

Anthropic often blocks these numbers

No delivery guarantee

No refund if SMS fails

Paid numbers

Exclusive non-VoIP

From $0.25 per activation

Private - only you see the SMS

Works with Anthropic in most cases

190+ countries to choose from

Delivery rate up to 49%

Auto-refund if SMS doesn’t arrive

Instant activation

Frequently Asked Questions

Can I verify a Claude account without my personal phone number?

Yes, Anthropic requires a phone number to verify a Claude account, and a virtual number from SMSFAST meets that requirement. The six-digit code lands on your SMSFAST number, not your personal phone, so your own line stays private. SMSFAST covers 190+ countries for this verification step.

Why does Anthropic block VoIP and virtual numbers from other providers?

Anthropic does not support VoIP numbers or landlines, according to its official support documentation. Numbers from public VoIP pools, such as Google Voice, are the common source of rejected verifications. SMSFAST provides paid, exclusive non-VoIP numbers on real carrier infrastructure, the number type Anthropic accepts.

Why is my Claude verification code not arriving?

Anthropic likely flagged the number as VoIP, or the number was already used for a registration. Select a different number in SMSFAST, and try a country with a higher delivery rate. If you cancel before the code arrives, your balance refunds instantly at no cost.

What happens if I lose access to the number used for Claude verification?

Anthropic cannot currently change a verified phone number on an account, so the signup number can matter for recovery. Enabling two-factor authentication through an authenticator app separates account security from any single phone number. Record the SMSFAST number you used so you can reference it later.

Can the same SMSFAST number be reused for multiple Claude accounts?

No, Anthropic applies a one-number-per-account policy, and a reused number returns a phone number already in use error. SMSFAST lets you get a separate virtual number for each Claude account from one balance. No extra SIM cards are needed for the next account.

Is using a virtual number for Claude verification legal?

Using a virtual number to verify a Claude account is legal in most countries for personal use. SMSFAST operates as a legitimate B2C virtual number service, and Anthropic's terms govern account use rather than the number type. This is general information, not legal advice.

Can I use my SMSFAST number for other platforms besides Anthropic?

Yes, SMSFAST supports SMS verification for 1,000+ platforms worldwide, including WhatsApp, Google, Discord, Telegram, and Amazon. If you cancel before the SMS arrives, your balance refunds immediately. Trying a number for another service then carries no financial cost, and each number stays exclusive to you.