Port 129 is not commonly used for any specific protocol or service. Some sources suggest that it may have been designated for the BSD RCP (Remote Copy) protocol, but this is not widely implemented or in use. As per the official IANA registry, Port 129 is unassigned, which means that it is not dedicated to any specific use or application.
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 129||tcp||pwdgen||Password Generator Protocol||WELL KNOWN PORT|
|Port 129||udp||pwdgen||Password Generator Protocol||WELL KNOWN PORT|
Unofficialy or sometimes with conflict, the same port may be used by different applications.