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Multi Factor Authentication (OTP) consolidated and automated. Receive your account verification codes and access your shared accounts easily, and securely.
Phone numbers are real US mobile non-voip numbers that will work with all major online platforms.
Receive verification codes (OTP) in a private or shared channels via SMS or voice call instantly and securely.
Use our phone numbers on any website and speed up login with your partners and employees by sharing MFA.
If you’re sharing a login with someone, there isn’t an easy way to properly secure your account - until now. Enable two-factor authentication and receive verification codes.
Get started by adding Clerk to your workspace.
Generate a unique phone number that belongs to you.
Turn on two step verification on your online accounts.
A verification code will be posted to your workspace.
All non-voip numbers are USA based and will work with any service.
Refer to our support documentation for a full breakdown
All Non-VoIP numbers are USA based real phone numbers that will work with ALL online services. Numbers are never recycled and are backed by AT&T, T-mobile networks.
Use our non voip numbers to post verification codes to any channel of your choice and authenticate with ease.
Share verification codes (OTP) directly in Slack public or private channels.
Automate the process by posting to an API or webhook endpoint of your choice.
Easily consolidate one time passwords inside of Microsoft Teams.
Automatically forward verification codes to one or multiple email addresses.
We know there's a lot to learn and read about all that Clerk can do. Here are some of the most frequently asked questions.
SMS verification, or SMS two-factor authentication (2FA) and SMS one-time password (OTP), allows users to verify their identities with a code that is sent to them via text message.
This is real mobile number that is associated with a physical sim card. Highly secure services such as Banks, Facebook, LinkedIn will only send a verification sms to a non virtual number.
Absolutely. We can send the verification SMS direct to your email address, or any webhook.
If you are unable to receive SMS verification codes most likely the service you are enabling MFA on does not accept VOIP phone numbers. You will need to request a Clerk non-voip number.
Yes. Most existing internet services such as Google, Apple, and others allow the use of a US based phone number for verification purposes.
Our phone numbers are NEVER recycled and completely unique for each individual customer.
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