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Tools: IP Lookup | Port Checker | QR Code Generator
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Port checker

Test whether a TCP port is open on a given host.

What the results mean

open
The port is accepting connections.
closed
The host actively refused the connection.
timeout
Connection attempt took too long. Often means a firewall is silently dropping packets - doesn't necessarily mean the port is closed.
filtered
Traffic to the port is being filtered.

Rate limited to 10 checks per hour per IP address.