Online check port tool

Just enter a host or server IP Address and a Port number into 2 textbox and type characters you see in the picture below then click GO, you can check if a specific port of a host is open or not.

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Common Default Ports

21 FTP 22 SSH
23 Telnet 25 SMTP
53 DNS 80 WEB
110 Pop 3 115 sFTP
135 RPC 139 NetBIOS
143 IMAP 194 IRC
443 SSL 445 SMB
1433 MSSQL 3306 MySQL
3389 Remote Desktop 4899 Radmin
5631 | 5632 PC Anywhere 5900 VNC