Port 3333

Modified by:

Port 3333 is not specifically assigned to any service or protocol. However, it is commonly used as a backup or alternative HTTP port. Some applications such as Node.js and some web development frameworks use Port 3333 by default. Additionally, some online games may also use this port for communication.

Ports those registered with IANA are shown as official ports. The same port number may be unofficialy used by various services or applications. The official usage are listed separately below its usage may change from time to time.

Official

Port
Protocol (TCP/UDP)
Title
Description
Port Type
Port 3333
tcp
dec-notes
DEC Notes
REGISTERED PORT
Port 3333
udp
dec-notes
DEC Notes
REGISTERED PORT

UnOfficial

Unofficialy or sometimes with conflict, the same port may be used by different applications.

Port Protocol (TCP/UDP) Description
Port 3333 Network Caller ID server
TCP UDP Ports
Other ports
Port 6515
Ports those registered with IANA are shown as official ports. The same port number
Port 4189
Port 4189 is commonly used for the Citrix ICA (Independent Computing Architecture) virtual channels.
Port 605
Ports those registered with IANA are shown as official ports. The same port number
Port 6360
Ports those registered with IANA are shown as official ports. The same port number
Port 6410
Ports those registered with IANA are shown as official ports. The same port number
Port 4110
Ports those registered with IANA are shown as official ports. The same port number
Port 2113
Ports those registered with IANA are shown as official ports. The same port number
Ports 21200 – 21300
Port 21200- Port 21300 Port 21300- Port 21400 Port 21400- Port 21500 Port 21500-
Port 1864
Port 1864 is typically used for Windows Live Messenger, which is an instant messaging
Port 73
Ports those registered with IANA are shown as official ports. The same port number
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