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
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Port 1920
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Port 4040
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Port 5461
Port 5461 is not commonly used for any specific protocol or service. It is
Port 214
Ports those registered with IANA are shown as official ports. The same port number
Port 1169
Ports those registered with IANA are shown as official ports. The same port number
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