Telesign Phone Number Intelligence API provides risk assessment and fraud detection capabilities based on phone number analysis. The service evaluates fraud risk throughout the customer journey using machine learning models and a proprietary global data consortium. The API delivers real-time risk scores, comprehensive reason codes, and actionable recommendations based on phone number metadata. Organizations can use these scores to make decisions about user registration, account creation, and transaction approval. The service includes detection capabilities for International Revenue Share Fraud (IRSF), traffic pattern recognition for anomalous activity, and analysis of digital identity signals. The machine learning model is customizable and provides explainable AI outputs with reason codes. The API integrates into existing security and fraud prevention workflows, allowing organizations to set risk thresholds based on their specific business requirements. The service aims to reduce fake accounts, detect fraudulent behavior during registration, and streamline account verification processes without adding friction to legitimate user experiences. The platform provides phone number reputation scoring and threat intelligence to help organizations verify new users and prevent spam, phishing, promotion abuse, and other account-based attacks.