ERR_NGROK_427: Domain DOMAIN CNAME record resolved to HAVE, should have been WANT

What does ERR_NGROK_427 mean?

ngrok returns ERR_NGROK_427 with this message:

Domain <DOMAIN> CNAME record resolved to <HAVE>, should have been <WANT>

Troubleshoot ERR_NGROK_427 with your AI agent. Connect it to the ngrok MCP server, then ask what caused the error and how to fix it.

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