In Admin > Text Numbers, you can see the phone numbers enabled for texting on this account, the phone number type (Local only for now but Toll-Free is coming soon), and the state (Active, Pending Activation, Deactivated).
If the Campaign Registry is missing, there will be a yellow info icon next to the phone number asking you to contact your service provider for assistance.
Your account was set up with a default phone number, but there are many reasons why your business may need more than one text-enabled phone number. Perhaps you have more than one department or you want to make sure customers can text employees with their own phone line.
To add a new text number to your account, please contact your service provider for assistance.