> ## Documentation Index
> Fetch the complete documentation index at: https://ngrok.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Error 319

## ERR\_NGROK\_319

You must reserve a custom hostname for your account before it can be used to create endpoints.
Failed to create an endpoint with the domain `DOMAIN` for the account `ACCOUNT`'.

Reserve this name on your dashboard: [https://dashboard.ngrok.com/domains/new](https://dashboard.ngrok.com/domains/new)

## Further help

If you're having trouble resolving this error, please reach out to [support@ngrok.com](mailto:support@ngrok.com?subject=Help%20with%20ERR_NGROK_319)