United SMS

Receive a FREE SMS CODE
for Crypto Exchanges
These numbers are a great way to test our free SMS service and receive a verification code at no cost.
For reliable SMS verification, exclusive access to incoming messages, and improved delivery rates,
please create an account and purchase a private one-time number.
For reliable SMS verification, exclusive access to incoming messages, and improved delivery rates,
please create an account and purchase a private one-time number.
Select a Free Temporary Phone Number
Once your SMS verification code has been received, it will automatically appear below.
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Recently received SMS messages and verification codes
Which Crypto Exchanges can I verify using free temporary phone numbers?
Our free burner phone numbers can receive SMS from many popular services, including
- Binance
- Coinbase
- Kraken
- OKX
- Crypto.com
- and others
Can I get a free US number to verify my Binance account?
Binance is the world's largest crypto exchange by trading volume, and its verification checks are very strict. A free phone number might work for Binance, but public numbers are usually already registered or blocked, so a paid private number gives you a much better chance of receiving the code.
Is there a free phone number I can use for Coinbase SMS verification?
You can try one, though it may not get you very far. A private paid number is far more likely to receive the SMS from Coinbase, since free numbers are shared by many users and often rejected. Coinbase is a US-based, publicly traded exchange known for its beginner-friendly app.
Will a free number work for Kraken exchange verification?
Founded in 2011, Kraken is one of the longest-running crypto exchanges and has a strong reputation for security. It's possible a free number will go through at Kraken, but for reliable results we recommend a paid private number that hasn't been used by anyone else.
Do you offer free phone numbers for OKX?
Free numbers can sometimes work with OKX, but they are unreliable, as many of them have already been used for sign-ups. If you want the code to actually arrive, a paid private number is the safer choice. OKX is a global exchange popular for spot and derivatives trading, and it comes with its own Web3 wallet.
Can I sign up for Crypto.com with a free number?
Crypto.com is a Singapore-based platform best known for its mobile app and crypto Visa cards. A free number may be accepted, but chances are low because these numbers are public and heavily reused. For a much better success rate, sign up and get a paid private number for Crypto.com.
What can I do with your temporary free numbers?
There are hundreds of services that can be verified even with free public one-time numbers. Most popular ones are
Looking for better and more reliable service?
Create an account and get a private number for SMS verification!
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No hidden fees. Pay only for successful SMS activations.
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References to third party services are provided solely for identification and compatibility purposes.
United SMS is not affiliated with, endorsed by, or sponsored by any of the services mentioned unless explicitly stated otherwise.
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