Systems and methods for assigning short codes to provide uniformity among wireless carriers. In the systems and methods, a Universal Short Code (USC) Administrator maintains a list of short codes and their lease status so that SMS messages sent to a particular short code may be routed to the proper holder of the short code. A network facilitator is in communication with both the USC Administrator and at least one wireless carrier to route the SMS message to the proper holder of the short code. The short code may be leased for a specified period of time so that the short code can be reassigned after expiration of the lease.