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.
Try it free
Thanks for reaching out!
A Vonage expert will get back to you shortly. In the meantime, feel free to explore the new Vonage and how we're making communications more flexible, intelligent, and personal so our customers can stay ahead.
Number Insight V2 in Beta
Start using our new Fraud Score and SIM Swap Detection solutions now!
Number Insight V2 in Beta
Start using our new Fraud Score and SIM Swap Detection solutions now!
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.
Validate
Phone number validation
Validate the legitimacy of customer phone numbers to confirm reachability and reduce delivery errors.- Distinguish mobile numbers from landlines
- Minimize fraud while ensuring a verified way to contact customer in the future
- Reduce delivery errors across SMS- or voice-based marketing campaigns
- Discover carrier to optimize SMS routing
Security
Fraud detection and step-up verification
Prevent costly fraudulent transactions using up-to-date phone number intelligence.- Detect possible fraud 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 if a phone number is valid, reachable, a virtual number or a landline, and more
Add a second layer of security with Verify 2-Factor Authentication
See how businesses like yours are using Vonage APIs today
