To Check Your Number Registration Status: Go to your Phone Numbers in the Twilio Console, then Manage > Active Numbers. For additional guidance, visit our Troubleshooting article.

What is a Message SID?

The Message SID is the unique ID for any message successfully created by Twilio’s API. It is a 34 character string that starts with “SM…” for text messages and “MM…” for media messages.

You can find the SID for a specific message by looking at your Messaging logs in the Console or by making a request to the Messages List Resource via the API.

To find the SID for a specific message in your project’s messaging logs, log into your Twilio project, select Monitor > Logs > Messaging. Click on the message of interest to bring up the details page for that message.

The message SID is the first item displayed:


To find the SID for a specific message via the API, make a GET request to the Messages List Resource. This will return a list of messages associated with your project along with details about each message. Each message resource will have a “Sid” property containing its unique Message SID.

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