> ## Documentation Index > Fetch the complete documentation index at: https://docs.dojah.io/llms.txt > Use this file to discover all available pages before exploring further. # Phone Number Verification and Risk > Validate and score phone numbers. Carrier, country, and risk signals so you can trust the number before you onboard. Phone Number Check screens a user’s phone number to validate authenticity and uncover identity signals tied to that number. This check can serve as a lightweight KYC entry point or a fraud flag signal in standard onboarding flows. *** #### Core Features * **Phone Validation**: Confirms if the number is active, mobile or landline, and not disposable. * **Carrier & Country Data**: See which network and country are associated with the number. * **Social Account Matching**: Identify linked accounts (e.g. email, social profiles) tied to that phone. * **Risk Score**: Flags high-risk numbers based on telco behavior and public data. *** #### Use Cases * **User Onboarding**: Validate a user’s number before proceeding with ID or document checks to minimize fraud and improve throughput. * **Risk Flagging**: Pre-screen phone numbers to detect high-risk users before approving risky accounts or actions. * **Profile Enrichment**: Capture demographic data tied to phone ownership for analytics or personalized experiences. *** #### Integration Options Submit a phone number via the Phone Check API to get instant screening results. Ideal for embedding into automated onboarding workflows or fraud prevention systems.