portscan.io - simple free online port scan
Your IP address:
How to use it:
Enter a port and click "Scan"
Don't do this from a network that you don't have permission to scan!
How does it work?
- We get your IP address from the connection you make to this server
- We try to connect to the TCP port you specify, at your IP.
- If we get a response, the port is open.
- If we get no response, the port is assumed closed.