# Phone Numbers

* Phone Numbers 2010-04-01 API

  * [Search for available numbers](/docs/phone-numbers/api/availablephonenumber-resource)
  * [Manage existing and purchase new Twilio phone numbers](/docs/phone-numbers/api/incomingphonenumber-resource)
* Port (transfer) a phone number to Twilio
* Hosted Numbers

  * [Hosted Phone Numbers API](/docs/phone-numbers/hosted-numbers/hosted-numbers-api/hosted-number-order-resource)
  * [Authorization Documents API](/docs/phone-numbers/hosted-numbers/hosted-numbers-api/authorization-document-resource)
  * [Hosted SMS Quickstart](/docs/phone-numbers/hosted-numbers/quickstart)
  * [FAQ](/docs/phone-numbers/hosted-numbers)
* [Best Practices for Phone Number Use](/docs/phone-numbers/best-practices)
* Global Phone Numbers Catalog

  * [/AvailableNumbers](/docs/phone-numbers/global-catalog/api/available-numbers)
  * [FAQ](/docs/phone-numbers/global-catalog/faq)