---
page_type: error
code: 30126
message: "30126: Your 10DLC number failed to be registered "
level: ERROR
product: Programmable SMS
---

## Description

Your phone number failed registration/deregistration due to Unknown reasons

### Possible Causes

Unknown

### Possible Solutions

- Contact [Twilio Customer Support](https://www.twilio.com/console/support/tickets/create)