# 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.

 - [POST /services/phone-number/check/request](https://docs.kycaid.com/risks-check/phone-numbers/phone-number-send-sms.md): Please refer to the [**legacy documentation**](https://docs-v1.kycaid.com/#phone-number-check) for this article
 - [POST /services/phone-number/check/submit-pin-code](https://docs.kycaid.com/risks-check/phone-numbers/phone-number-send-pin-code.md): Please refer to the [**legacy documentation**](https://docs-v1.kycaid.com/#phone-number-check) for this article