> ## 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 326

## ERR\_NGROK\_326

Invalid character `CHAR` in domain name. Valid domains may contain only a-z, A-Z, 0-9, . \* and - characters. Failed to create an endpoint with the domain `DOMAIN`.

## 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_326)