ERR_NGROK_310: Only Hobbyist and Pay-as-you-go plans may create endpoints with reserved addresses - ngrok documentation

What does ERR_NGROK_310 mean?

ngrok returns ERR_NGROK_310 with this message:

Only Hobbyist and Pay-as-you-go plans may create endpoints with reserved addresses.
Failed to create an endpoint with the address <ADDR> for the account <ACCOUNT>.
This account is on the <PLAN> plan.

This usually only happens if you downgraded your ngrok account and it no
longer has permission to use reserved addresses.

Upgrade your account at: https://dashboard.ngrok.com/billing/choose-a-plan

Troubleshoot ERR_NGROK_310 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_310?

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