International Telephone Input Validation
Created by: Twilio
- Verify
- JavaScript
- Quick Deploy
This project will show you one way to validate phone number inputs with the intl-tel-input
plugin and Twilio's Lookup API. 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.

How it works:
- User selects their country from the drop down and enters their phone number
- App validates phone number validity with the Twilio Lookup API
- App displays the phone number in E.164 format
For more information, check out this blog post on building international phone number input.
Quick Deploy to TwilioGet CodeUse Twilio CLI