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Network
Port Scan
Check multiple TCP ports on a host at once
Free
No sign-up
Medium
About this tool
Scan a list of TCP ports on a host to see which are open — useful for a quick check across several common ports at once.
Frequently asked questions
How many ports can I check at once?
Enter a comma-separated list of specific ports (e.g. "22,80,443,3306") — there's no fixed limit, but keep lists reasonable for faster results.
Only scan hosts you're authorized to test
Use this on your own servers or ones you have explicit permission to test — scanning third-party infrastructure without authorization may violate their terms of service.