Port 109


Port 109 is used for the Post Office Protocol version 2 (POP2), which is a protocol used to retrieve email messages from a mail server. However, this protocol is rarely used nowadays as most email servers and applications use the newer version, POP3.

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.


Port Protocol (TCP/UDP) Title Description Port Type
Port 109 tcp pop2 Post Office Protocol Version WELL KNOWN PORT
Port 109 udp pop2 Post Office Protocol Version WELL KNOWN PORT


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

Port Protocol (TCP/UDP) Description


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