---
page_type: error
code: 30440
message: "30440: Toll Free verification rejection - Unknown Error"
level: ERROR
product: Programmable Messaging
---

## Description

The toll-free phone number cannot be verified due to an unknown error. Messaging traffic on this Toll-Free phone number is blocked.

### Possible Causes

Unknown

### Possible Solutions

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

See [Toll-Free best practices](https://support.twilio.com/hc/en-us/articles/360038172934-Information-and-best-practices-for-using-Toll-Free-SMS-and-MMS-in-the-US-and-Canada) for resources on how to implement Toll-Free messaging.

See [what happens to traffic](https://support.twilio.com/hc/en-us/articles/9321443984155-Why-Was-My-Toll-Free-Verification-Rejected-#:~:text=deceptive%20marketing%20tactics-,What%20happens%20to%20my%20traffic%20if%20my%20Toll%2DFree%20number%20is%20rejected%3F,-If%20your%20Toll) if a Toll-Free verification is rejected