# Phone numbers

Validate phone numbers and assess their technical risk level. Identify virtual numbers (VOIP), disposable SIMs, and ecarrier-specific data to flag potential fraudulent activity.


## Send SMS

 - [POST /services/phone-number/check/request](https://docs.kycaid.com/risks-check/phone-numbers/phone-number-send-sms.md): {% admonition type="info" name="Content migration in progress" %}
  Please refer to the legacy documentation for this article
{% /admonition %}

## Send PIN code from SMS

 - [POST /services/phone-number/check/submit-pin-code](https://docs.kycaid.com/risks-check/phone-numbers/phone-number-send-pin-code.md): {% admonition type="info" name="Content migration in progress" %}
  Please refer to the legacy documentation for this article
{% /admonition %}