TCP/UDP port number ranges

There are three ranges:
  • Well-Known Ports: 0 – 1023

  • Registered Ports: 1024 – 49151

  • Dynamic and Private Ports: 49152 – 65535

For more information, including a listing of UDP/TCP port numbers, go to the Internet Assigned Numbers Authority (IANA) website at:

Then click:

Protocol Number Assignment Services

P (under Directory of General Assigned Numbers)

Port Numbers