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MXit Messenger
MXit is a mobile-focused instant messaging application that originated in South Africa. It enables users to send and receive text messages, multimedia, and participate in chat rooms. Port 9119 is primarily used by the MXit client to establish and maintain communication with the MXit messaging servers over both TCP and UDP protocols..
MXit Instant Messenger operated as a mobile-oriented chat platform targeting feature phones and early smartphones, utilizing port 9119 for server communication. This port supported protocols over both TCP and UDP, ensuring flexibility and low-latency message delivery while maintaining connection stability. Users could exchange text messages, images, and access chatrooms via optimized mobile data connections, in an environment tailored for minimal bandwidth usage.
Port 9119 facilitates signaling and payload data transmission between client devices and MXit backend servers. The communication flow typically initiates on TCP for connection setup and message delivery reliability but often leverages UDP for faster message broadcasting when latency is a concern. Service availability over this port enabled users in low-resource settings to remain connected with reduced costs.
Most MXit traffic was internally managed within cellular provider networks, but external connectivity also required open access to port 9119 through firewalls. Though the platform has largely seen diminished use with the rise of alternative messaging apps, legacy infrastructure may still exhibit activity over this port.