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
link updated 03 Mar 2014 -->
TCP/IP ports port numbers well known ports registered ports dynamic ports