# International telephone input validation This project will show you one way to validate phone number inputs with the [`intl-tel-input`](https://github.com/jackocnr/intl-tel-input) library and Twilio's [Lookup API](https://www.twilio.com/docs/lookup/api). For a production use case we recommend adding [phone verification](https://github.com/twilio-labs/function-templates/tree/main/verify), which is a best practice for collecting phone numbers from your users in order to make sure they have control of the number. ## Installing Create a .env file and add your environment variables found in the [Twilio console](https://twilio.com/console) ``` cp .env.example .env ``` Then install the dependencies and run with npm: ``` npm install npm start ``` Navigate to http://localhost:3000/index.html