Port Numbers

The port numbers are divided into three ranges: the Well Known Ports, the Registered Ports, and the Dynamic and/or Private Ports.
The Well Known Ports are those from 0 through 1023.
The Registered Ports are those from 1024 through 49151
The Dynamic and/or Private Ports are those from 49152 through 65535

Long list is available at http://www.iana.org/assignments/port-numbers (~600 KB).

TCP-List:

20	: FTP - used for data up/download
21	: FTP - used for control streams
22	: SSH - used for secure logins
23	: Telnet - unencrypted text communications
25	: SMTP - Simple Mail Transfer Protocol
80	: HTTP - used for transferring web pages
109	: POP2 - used for retrieving E-mails
110	: POP3 - used for retrieving E-mails
119	: NNTP - used for retrieving newsgroups messages
143	: IMAP4 - used for retrieving E-mails
194	: IRC - Internet Relay Chat
443	: HTTP over SSL
465	: SMTP over SSL
993	: IMAP4 over SSL
995	: POP3 over SSL