Custom hostnames are only available for Pro and Business paid plans. Failed to bind the custom hostname <HOSTNAME> for an unauthenticated client. Sign up at: If you have already signed up, make sure your authtoken is installed. Your authtoken is available on your dashboard:

Further help

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Additional Information

Binding a custom domain such as requires a paid plan. Once you sign up for a paid plan, we'll give you an authtoken which you'll add to your ngrok agent. That will allow you to use custom domain.

Possible Solutions

Sign up for a paid plan at You will need the Pro or Business plan to use a custom hostname.

Add your authtoken from your account dashboard to your ngrok agent in your terminal.

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