Port Checker
Test open ports on any hostname
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How to Use This Tool
- Enter hostname and port number.
- Server attempts a TCP connection handshake.
- Open/closed status is returned with service hints.
About This Tool
Port checking helps verify firewall rules and service availability. Test common ports like 80, 443, 22, and 3389 against any public host.
Common use cases
- •Measure download and upload speed
- •Test open ports on a home router or server
- •Trace routing paths to diagnose latency
Frequently Asked Questions
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