NETWORK TOOL
OPEN PORT CHECKER
Check whether a port on your public IP address is reachable from outside your network.
PORT CHECKER READY
IT BROLIAI SERVER
PROTOCOLTCP
PORTSTATUS
Check results will appear here.
FAQ
Frequently asked questions
What does an open port mean?
It means a TCP connection from outside the network reached your public IP address and the selected port.
Why might an open port appear closed?
Firewalls, CGNAT, provider filtering, service state or a server that is not listening can affect the result.
Which ports are checked automatically?
80, 8000, 8080, 3389, 22, 2222 and 9100.