Port 139

Modified by:

Port 139 is known as NetBIOS Session Service. It is used for file and printer sharing over a network using the Server Message Block (SMB) protocol. This port is commonly used by Windows operating systems for network communication. However, it can also be used by malware to spread and infect other computers on the network.

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 139
tcp
netbios-ssn
NETBIOS Session Service
WELL KNOWN PORT
Port 139
udp
netbios-ssn
NETBIOS Session Service
WELL KNOWN PORT

UnOfficial

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

Port Protocol (TCP/UDP) Description
TCP UDP Ports
Other ports
Port 206
Ports those registered with IANA are shown as official ports. The same port number
Ports 47800 – 47900
Port 47800- Port 47900 Port 47900- Port 48000 Port 48000- Port 48100 Port 48100-
Port 20012
Ports those registered with IANA are shown as official ports. The same port number
Port 2667
Port 2667 is often used for internet relay chat (IRC) servers. Ports those registered
Port 1554
Port 1554 is commonly used for the InterBase database management system. It is used
Ports 20900 – 21000
Port 20900- Port 21000 Port 21000- Port 21100 Port 21100- Port 21200 Port 21200-
Port 4370
Port 4370 is typically used for communication between a client and server application in
Port 2261
Ports those registered with IANA are shown as official ports. The same port number
Ports 30300 – 30400
Port 30300- Port 30400 Port 30400- Port 30500 Port 30500- Port 30600 Port 30600-
Port 4350
Port 4350 is primarily used for communication between mobile devices and servers for mobile
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