A phone number for OTP and SMS verification

Receive one-time passwords (OTP) and SMS verification codes on a real mobile number you control — for WhatsApp, Facebook, Telegram, Google and any other app. From $1.80 a month.

From $1.80/month on the 12-month plan · Choose your country

Why use a separate number for OTP codes

Keeping verification codes on a separate number protects your personal number from spam and data leaks, and lets you verify accounts in another country.

Because the number stays yours, you can receive new OTP codes whenever an app asks you to log in again or reset your password.

How it works

1. Choose a country and rent a number — it is active immediately.

2. Enter it in the app in international format (+ and country code).

3. The OTP arrives in your SMS Hallo inbox within seconds; copy it with one tap.

Covered if a code doesn't arrive

If the number doesn't work for you, replace it free with another number in the same country within 7 days, or get a 100% refund.

Get a number in any country

Frequently asked questions

What is an OTP number?

It is a phone number you use to receive one-time passwords (OTP) and verification codes by SMS. With SMS Hallo it is a real mobile number that stays yours.

Can I receive OTP codes from any country?

Yes. Numbers are available in 181 countries and you can read the codes from anywhere in the world.

Will I get OTP codes again later?

Yes. As long as you keep renting the number, you can receive new codes for logins and password resets.

What if an OTP never arrives?

Replace the number free within 7 days, or get a 100% refund if it doesn't work with your app.