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Introducing Vonage Identity Insights API

This article was updated on September 2, 2025

The new Identity Insights API is now available in Beta. This release is a major step forward in helping businesses take advantage of exciting mobile network features related to phone number intelligence.

Illustration of a hand holding a mobile phone with an ID card next to the phone, representing Identity Insights API

What is Vonage Identity Insights? 

This is a new API that empowers brands to create frictionless, secure, and personalized customer journeys. It’s a deeper dive into every phone number — with real-time intelligence on the carrier, device, and subscriber. Now you can:

  • Request any combination of available attribute sets — or insights — in a single API call.

  • Access functionality through a non-intrusive, frictionless, and transparent experience for the phone number owner.

  • Scale to new features from a single endpoint.

  • Expand reach across hundreds of operators and regulatory authorities worldwide, without needing to manage interconnections, integration methods, or compliance complexities — Vonage normalizes all of that for you.

Explore the technical documentation for the full list of available insights.

What you can do with Identity Insights 

Identity Insights provides know-your-customer (KYC) data from mobile networks that enhances your risk decision engine — all without involving the user. Key features focus on:

SIM swap: Ensure your numbers are usable

Fraudsters use SIM swaps, phishing, and fake identities to bypass security. Identity Insights helps to:

  • Determine when a SIM swap was last performed on a mobile number or whether a SIM swap has occurred during a specific period

  • Strengthen SIM-based authentication processes

Your business is better protected against potential fraud — before it happens. And your customers enjoy the protection with a seamless experience.

Subscriber match: Connect contacts to mobile operators

Identity Insights helps you flag suspicious activity — that requires verification — before granting access and impacting your business. This means instantly validating end user contact information with their mobile operator’s KYC data to:

  • Allow any number of supported attributes to be matched and includes match scoring algorithms to measure closeness

  • Verify users quickly to reduce churn and improve CX

The speed and experience help with conversion rates, reduce the risk of identity theft, and secure online transactions.

Additional Identity Insights features include:

  • Number format: Know the country and time zone plus validate if the phone number can potentially be assigned to a subscriber based on its format.

  • Current and original carrier: Identify the current and original carrier that is associated with the phone number.

  • Caller name: Identify the individual or business owning the phone number (U.S. only).

Better protect your business from unnecessary losses 

Thanks to identity insights intelligence, you can significantly reduce your risk of fraud and account takeovers. This new plug-and-play API provides invisible risk evaluation and simple usage-based pricing — keeping you one step ahead of the bad actors.

It’s time to better protect your business from unnecessary losses. Read the easy-to-follow guide and get started with Vonage Identity Insights today.

Sign up now

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By Adam Weir Product Expert, Fraud Solutions

Adam Weir is a senior product marketing manager for Vonage Communications APIs. He leverages his marketing expertise to develop strategies and promote key API solutions including Video, Verify, and Number Insight, along with Vonage Artificial Intelligence. Adam has broad marketing experience, working previously in the financial services, information technology, and staffing industries. He lives in the Orlando, FL area, where he enjoys the year-round sunshine by spending quality time with his family at the local beaches and theme parks.

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