A message originates from a mobile station which is operable within a wireless network. In disclosed examples, the wireless network has a Messaging Service Center (MSC). The MSC determines whether the MSC stores a Uniform Resource Identifier (URI) corresponding to a destination mobile directory number (MDN) that is inputted via the mobile station. Then, the MSC sends the message to the URI corresponding to the MDN if the first MSC stores the URI corresponding to the MDN. The MSC sends a request to find the URI corresponding to the destination MDN to an external tElephone NUmber Mapping (ENUM) server, if the first MSC does not store the URI corresponding to the destination MDN. The MSC sends the message to the URI corresponding to the destination MDN if the external ENUM server sends the URI corresponding to the destination MDN. The MSC also indicates charging policy for delivery of message based on a billing identification corresponding to the destination MDN or URI that is stored in the MSC in the same table.