Increase acquisition safely with phone number data
Vonage's Number Insight API lets you identify billions of phone numbers around the world and determine the best way to reach your customers using fresher data from real-time sources. Increase acquisition, assess risk, prevent fraud and block fake accounts – all without relying on customer input.
Nexmo is now called Vonage, but there are still references to Nexmo in our URLs, code snippets and message templates.
This API helps you to...
Keep your database up to date
By periodically validating the numbers in your customer database, you can be sure that customer numbers are still reachable, reducing delivery errors when running SMS or voice-based marketing campaigns.
Use the right channel
Validating information enables you to distinguish mobile from landline numbers – ensuring that you don’t try to send text messages to landlines if reaching out via SMS.
By asking your customer to provide a phone number – and then validating the legitimacy of that number – you can minimize fraud while ensuring that you have a way to contact that customer in the future.
How it works
You can validate numbers from any location in the world, so you can be sure you have accurate information regardless of where users are using your app. Your app can ask users to enter a phone number during registration or you can identify existing numbers in your customer database.
Your application passes the phone number to Vonage's Number Insight API for analysis. Number Insight queries multiple information sources to validate and gather information about the number. Vonage's Number Insight returns information on the phone number to your application so you can remove unreachable numbers and identify valid numbers as mobile or landline.
What our customers say
Offers accurate operator information, identifying mobile numbers that have been ported.
Determines caller type
What it costs
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Best for formatting numbers and displaying
Best for identifying number type, deciding between
Best for determining risk
All prices may be subject to change at any time.