Free • No Sign-Up • Common TCP Ports
Online Port Scanner
Check which of the common TCP ports are open on a public IP address or domain securely from your browser.
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Target
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Open Ports
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Host Status
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Scan Time
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Only scan systems you own or have written permission to test.
Ready. Enter a target and press Scan Ports.
Scan Results
Enter a target, confirm permission and press Scan Ports.
View raw scan output
Free Online Port Scanner
A port scanner checks a computer on the internet to see which network ports are open and listening. This tool scans common TCP ports on a public IP address or domain name.