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Open Port Checker

Protect Your Website Today
Use this tool to check if a particular port is open in your computer or web server: for example, if you're setting up servers, and want to check if the servers are accessible through the internet, or to check if port forwarding is setup correctly and firewall rules are configured properly. You can also this tool to ensure vulnerable ports are not open to the public. A list of commonly used ports are listed below:

Service Port No.
FTP Server 21
Secure Shell(SSH) 22
Telnet 23
DNS 53
Web Server 80
POP3 110
IMAP 143
Web Server (HTTPS) 443
Remote Desktop 3389
Teamviewer 5938