Service Access Codes (SACs) are special codes that are part of the standard North Amercan Numbering Plan (NANP). A messaging address system and method for facilitating interaction between mobile subscribers (100) and message-based applications (112). a communications network 122 ; and a message center system 104 coupled to the communications network.122 The message center system comprises a processor configured to: associate destination addresses with corresponding data network addresses; said destination addresses formatted in accordance with a standard non-geographic numbering and administration plan, receive a mobile-originated message generated by a subscriber wireless device; the destination is formatted in accordance with the Numbering Plan (NANP) service access code (SAC) format.
