With Twilio Phone Numbers
Zendesk scales globally
Verified Quality
Thoroughly-vetted phone numbers — because quality matters.

The experience of going to Zendesk Voice and signing up for a phone number in 40 different countries is pretty incredible.

Large Inventory
Give your customers a local phone number to call and text you.
  • Over 700 Prefixes & Area Codes

    Twilio maintains phone number inventory that is 50 times larger than the phone numbers provisioned daily in every area code and prefix we service. If you can’t find what you need, please let us know.

    See all coverage.

  • Developer Preview Numbers

    We’re constantly adding new local, mobile, and toll-free phone numbers from around the world. You can now get early access to the latest numbers being added to Twilio before they’re available via the Console or API.

    Find all Preview Numbers.

We are growing between 2,000 to 5,000 phone numbers a month and our previous vendor couldn't keep up with the volume of numbers.

Use your own number
Add Twilio SMS and Voice capabilities to your existing landline or mobile number.
  • Number Porting

    Port your existing U.S. numbers from the current provider to Twilio through an online application, and we take care of the rest. You can also automate the porting process with the Twilio Porting API.

    Access developer preview.

  • SIP Forwarding

    If your carrier supports call forwarding over SIP, you can also use the Voice API with existing phone numbers. It’s a relatively inexpensive option for countries where Twilio doesn’t have phone numbers or where porting is not possible.

    See an example.

  • Hosted SMS

    Send and receive SMS messages with your existing phone number without changing your voice service. Phone calls continue to work the same way while SMS goes through Twilio, all on the same number.

    Access developer preview.

Phone Number Capabilities
Choose the ideal way to connect with your customers through Twilio.
  • Multi-Function Numbers

    Voice, SMS, and MMS on the same number

  • Local Numbers

    Voice-enabled numbers with a regional identity

  • Toll-Free Numbers

    Voice and SMS-enabled national numbers

  • Mobile Numbers

    SMS-capable national numbers

  • National Numbers

    Voice-capable standard call-cost national numbers

  • Short Codes

    High-volume SMS and MMS-enabled numbers

The Twilio advantage
  • Communicate reliably

    Experience a 99.95% uptime SLA made possible with automated failover and zero-maintenance windows.

  • Operate at scale

    Extend the same app you write once to new markets with configurable features for localization and compliance.

  • Many channels

    Use the same platform you know for voice, SMS, video, chat, two-factor authentication, and more.

  • No shenanigans

    Get to market faster with pay-as-you-go pricing, free support, and the freedom to scale up or down without contracts.