Does Twilio have an API to get information about phone numbers?
Twilio does not have an API for checking if a phone number is valid, or for discovering the type of number. Fortunately, there are some tools available to help you determine if a phone number is valid.
Google’s opensource libphonenumber project is probably the best tool for any sort of work involving phone numbers. libphonenumber can be used to determine the type of phone numbers when users do not provide the number in E.164 format. It can also produce example phone numbers to improve the accuracy of the data you collect in the first place.
Try actually making a request
If you don’t mind actually making the phone call or sending the SMS, you might just try making a request to Twilio and catching the errors if Twilio returns any.
When your application submits a POST request, Twilio will perform some basic checks to determine if the “To” number can be reached. There are two possible outcomes:
- If Twilio determines that the number is reachable, Twilio will respond with an HTTP 200 and the message or call will be processed normally.
- If Twilio determines that the number is not reachable, Twilio will respond with an HTTP 400 and a specific error which may give some information about why the number isn’t reachable. Learn more about the potential responses from the API in the event that a number isn’t reachable.
You can also learn more about Twilio’s Exceptions in our API documentation.