Twilio Caller ID Setup

Setting up your Twilio Caller ID is a simple way to ensure you have caller ID enabled for incoming calls. This is done through Twilio specifically, as the third-party phone provider Referins integrates with. There is a cost per request for this service. Check out the steps below for setting this up within your Twilio account:

NOTE: Depending on your access, you may or may not have access to a Twilio account.

Adding a Verified Caller ID

• Go to the Verified Caller IDs section in the Console.
• Click on "Add a new Caller ID."
• Enter the desired phone number to verify, select the verification method (SMS or Call), and click "Verify Number."
• Enter the OTP code received on the provided number, then click "Submit."
• If the correct code is entered, the number will be successfully added as a verified caller ID.

Removing a Verified Caller ID

• Navigate to the Verified Caller IDs section in the Console.
• Locate the phone number you want to remove.
• Click “Remove” next to the desired phone number.

Frequently Asked Questions (FAQ)

1. How can I add a verified phone number to my Twilio account using the Console?

• To add a verified phone number via the Console, navigate to the Verified Caller IDs page, click "Add a new Caller ID," enter the phone number, choose a verification method, and follow the prompts to verify using an OTP code.

2. Can I use a verified phone number for sending SMS or MMS messages on Twilio?

• No, verified phone numbers are intended for voice services only. They cannot be used as the display name for outgoing SMS or MMS messages.

3. Why can’t I receive inbound calls to my verified phone number on Twilio?

• Verified phone numbers can only be used as Caller IDs for outbound Twilio calls. Inbound calls will continue to be routed through your existing service provider unless you forward them to a Twilio number or port the number into Twilio.

4. How do I remove a verified phone number from my Twilio account?

• To remove a verified phone number, go to the Verified Caller IDs page in the Console, locate the number you want to remove, and click "Remove."

5. Can I verify a phone number that’s behind an IVR or extension?

• Yes, you can verify such numbers by including "w" characters in the Extension parameter to adjust the timing of when digits are played, allowing you to verify numbers behind IVR menus.

6. Is it possible to verify phone numbers at scale with Twilio?

• Yes, if you have a large number of phone numbers to verify, Twilio provides a guide for verifying Caller IDs at scale. This can be done programmatically using the REST API.

7. Are there any regional limitations for adding verified caller IDs?

• Yes, the Verified Caller ID service is only available in the US1 data routing region at this time. It is not available for IE1 or AU1 regions, although you can still add Ireland and Australia numbers to the US1 data route.

8. Can I add a verified phone number to Twilio using the REST API?

• Yes, you can add a verified phone number by submitting an HTTP POST request to the OutgoingCallerIds REST API resource. Refer to the Twilio documentation for detailed instructions.

9. What are the limitations of adding verified caller IDs with a Twilio free trial account?

• Free trial accounts can only add verified caller IDs via SMS, and you are limited to making calls or sending SMS to numbers that are verified caller IDs. Inbound calls can only be received from verified numbers.

10. How can I receive incoming calls through Twilio if my number is verified but not ported?

• You can forward incoming calls to a Twilio number via your current service provider or consider porting the number into Twilio for full inbound call functionality.