Telesign Phone ID is a mobile identity verification service that provides access to a dataset of over 5 billion phone numbers and 2,200 digital identity signals. The service enables organizations to verify user identities, validate phone numbers, and assess risk through phone number intelligence. The product offers phone number validation and cleansing capabilities that reformat numbers according to international dialing standards. It provides subscriber characteristics including device type, telecom carrier information, and phone registration data in real-time. Organizations can use this data to optimize message routing and reduce failed delivery attempts. Phone ID includes fraud prevention capabilities such as SIM swap detection, port-out detection, call forwarding identification, and data breach compromise signals. These features help organizations detect account takeover attempts and prevent identity theft during user onboarding and authentication processes. The service supports identity proofing workflows by verifying name, address, and other subscriber attributes. It can be integrated into Know Your Customer (KYC) processes and helps prevent synthetic identity fraud. The product also includes age verification capabilities to restrict underage access to restricted content or services. Phone ID provides risk profiling features that allow organizations to enhance internal risk models with subscriber attributes, number deactivation status, and porting history. The service helps organizations maintain compliance with regulations such as TCPA, HIPAA, and PSD2 through phone number validation and risk assessment capabilities.