A method and system for delivering SMS and MMS messages from a mobile telephone to devices having addresses on an Internet Protocol network are provided. In an embodiment of the invention a device having an IP address and a Media Access Control (MAC) address is registered on a network router and a telephone number is associated with the registered device on the router, such that when the router receives an SMS or MMS message for the telephone number associated with the device the router retrieves the IP address for the device and routes the message to the device.