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Phone Number Lookup

By Twilio

  • Verify
  • Twilio
  • Quick Deploy
  • Applications

Look up a phone number to get different types of information including:

  1. Validation and Formatting. Detects invalid phone numbers and parses numbers into the standardized E.164 format
  2. Carrier. Detects line type (i.e. mobile, landline, voip*) and carrier.
  3. Caller name. Subscriber info, US only.

More details in the Lookup API documentation. New data coming soon in V2. Learn more and sign up for early access.

For a production use case we recommend adding phone verification, which is a best practice for collecting phone numbers from your users in order to make sure they have control of the number.

See how to combine Lookup and Verify in this code sample for SMS verification with retry logic.

*VoIP detection is US only

Launch and test this app in a few minutes with Quick Deploy. No server needed. Quick Deploy will automatically configure and deploy this app using Twilio Functions. Learn more about Twilio Functions
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Once deployed, any changes to the fields above will not be applied to your app. To make changes, here are two options
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Don't see what you want? Request a code sample Explore Docs

Questions about scaling, pricing, or which products/features to use? Get a consultation

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