Scan your visible public IP for common open TCP ports.
216.73.216.168
If you are behind NAT/firewall, this checks your public-facing IP, not necessarily your local computer.
By using this tool, you confirm that you are authorized to perform connectivity and exposure checks against the detected public IP address shown on this page. This tool performs basic TCP connection checks only. It does not attempt authentication, exploitation, bypass, or vulnerability testing. You agree to hold IDEZ, Inc. harmless from any issues arising from use of this tool.