OPEN PORT CHECK TOOL
FQDN or IP Address
Port Number
must be between 1 to 65535
Most Common Ports
About Open Port Checker Tool
The open port checker tool allows you to check the port status of your external IP address or Fully Qualified Domain Name (FQDN) you have entered and the port for your service. This tool is extremely useful to find out if your port forwarding is setup correct or if your server applications are blocked or not by a firewall. The open port checker tool can also be used as a port scanner to scan your network for ports that are commonly used such as HTTP (port 80). Some may be closed such as port 25 by default, are often blocked at the ISP level in order to prevent malicious activities.
Please note that if a port is open it does not mean the underlying application works correctly, such as port 80 can be open but it does not mean the HTTP server works correctly.
Blog for Port-Checking-Tool
Port Checker Tool by Unboundedata Engineering
Lots of times there is a need in data engineering where one service is setup and it's listening on a port, and one does not know if it's accessible from outside or not. Or it's a handy tool to check if any particular port is not open when it should not be.
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