Number Insight API
The Vonage Number Insight API makes the most of existing customer data to secure fresher insights from real-time sources. Now you can identify phone numbers around the world and determine the best way to reach customers. Assess risk, prevent fraud, block fake accounts and increase acquisition – all without relying on customer input.
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Learn moreSee how our Number Insight API helps businesses like yours succeed
Offer an enhanced customer experience
Identify callers and anticipate customer intent with Caller Identification.
Verify customers in context
Authenticate customers based on their intent — from sign up to sign in — with Tiered User Verification.
Phone number validation
Validate the legitimacy of customer phone numbers to confirm reachability and reduce delivery errors.- Distinguish mobile numbers from landlines
- Minimise fraud while guaranteeing a verified way to contact customer in the future
- Reduce delivery errors across SMS- or voice-based marketing campaigns
- Discover carrier to optimise SMS routing
Fraud detection and step-up verification
Prevent costly fraudulent transactions using up-to-date phone number intelligence.Identify possible fraudulent activity and trigger step-up authentication when needed
- Reduce customer friction with additional steps only for suspected numbers
- Leverage Number Insight to deliver real-time phone number intelligence
Determine whether a phone number is valid, a virtual number or a landline, and more
Add a second layer of security with Verify 2-Factor Authentication
Detect SIM Swap fraud by knowing whether a phone's SIM card was recently changed
