Port Checker is a simple and free online tool for developers programmers and individuals alike to check open ports on a computer/device and is often useful in testing port forwarding settings on a router. It has gained popularity among users for its simple interface which makes navigating and getting results easy. However there are well known ports which include; 20 & 21 - FTP (File Transfer Protocol) 22 - SSH (Secure Shell) 23 - Telnet a Remote Login Service 25 - SMTP (Simple Mail Transfer Protocol) 53 - DNS (Domain Name System) 80 - HTTP (Hypertext Transfer Protocol) 110 - POP3 (Post Office Protocol 3) 115 - SFTP (Secure File Transfer Protocol) 123 - NTP (Network Time Protocol) 143 - IMAP (Internet Message Access Protocol) 161 - SNMP (Simple Network Management Protocol 194 - IRC (Internet Relay Chat)
Checking if a port is online.
Input the domain name/URL Input the port Click on Check Open Ports and watch your results displeyed in an instant.
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