ERR_NGROK_509: Your account is rate limited for adding MAX reserved addresses per INTERVAL - ngrok documentation

What does ERR_NGROK_509 mean?

ngrok returns ERR_NGROK_509 with this message:

Your account is rate limited for adding <MAX> reserved addresses per <INTERVAL>.

Troubleshoot ERR_NGROK_509 with your AI agent. Connect it to the ngrok MCP server, then ask what caused the error and how to fix it.

Where can I get more help with ERR_NGROK_509?

Email support@ngrok.com and include the error code.