This guide includes the steps on how to locate your:
Primary Account SID and Auth Token
To locate your Primary Account SID and Auth Token, log in to your Twilio Console at https://www.twilio.com/console. Once you are logged in, you will see a dashboard that displays information about your account. You may need to scroll down to see both info.
Subaccount SID and Auth Token
To locate your Subaccount SID and Auth Token, log in to your Twilio Console at https://www.twilio.com/console. Once you are logged in, navigate to Account > Subaccounts.
Next, click the account name hyperlink to access the subaccount.
You may need to scroll down to see both info.
Related Article: Integrating Twilio with the Dialer