Our online port scanner checks which TCP ports are open on a target host to help you verify firewall rules, troubleshoot connectivity issues, and reduce your attack surface. Scan common ports like HTTP (80), HTTPS (443), SSH (22), and mail ports, or scan custom ranges to identify running services. Important: only scan servers and networks you own or have explicit permission to test.
Legal & Ethical Use Notice
Only scan systems you own or have explicit written permission to test. Unauthorized port scanning may be illegal and could violate terms of service.
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