Number verification API
Network as Code provides identity and security capabilities that allow your applications to prevent
or proactively react to fraud by using resources that go beyond traditional 2FA authentication processes.
Instantly verify if a mobile phone number that a user provides is the same one being used on their device or not.
Service Providers can also confirm the mobile device's phone number (MSISDN),
which can be returned to them by this API.
These features provide an extra layer of security against fraud, such as SIM cloning or spoofing.
You can easily integrate the Number Verification functionalities to your applications and shield them with an extra layer of security against fraudulent attempts, such as SIM swapping.
What does this API do?
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Verifies if the phone number provided is the same one being used by the mobile device.
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Returns the device phone number that is linked to the authenticated end-user's access token
The Number Verification API implements CAMARA project's 3-legged OAuth 2.0 flow to consume APIs. This means that a network subscriber consuming an enterprise application will provide consent at screen. The mobile app requests to verify a user's phone number and receives a
check_urlin return. This URL, which must be opened by the app using a mobile data connection, leads through several redirects before getting a successful response from the Network Provider and Network as Code. This verification cannot be done for devices accessing the network via mobile hotspot (tethering), neither Wifi nor VPN mobile connections.
Terminology and acronyms
MSISDN: The phone number associated with a SIM card that you want to check.
What's behind this technology?
The Number verification functionality follows CAMARA definitions, which is an open-source project within Linux foundation. Network as Code bridges the gap between your application and the Operator platform making the connection seamless so you can retrieve phone number data. After you register on Network as Code Developer Portal and get consent & authorization for devices, you will be able to easily use and integrate this API into your applications.
Last updated November 05, 2025