Port Checker can help you to know is the port on the server is open or not. Port Checker is also used to Proxy Checker and many more.
To use it's very simple :
1. Enter the Server or Host in the field below. Host like: google.com, facebook.com, and server like 188.8.131.52, 128.199.XXX.XXX
2. Enter the Port Number. You can enter by single port example: 80, or you can enter multi-port example: 80,443,8080
3. Click "Check" and please wait. It's will take a few seconds.