Intelligent call handling and routing based on numbering plan area code

A data-communications system to communicate over one or more wide-band networks, the data-communications system comprising:

• a set of one or more data communications servers (“server set”) operated on behalf of a data communications provider to provide data communications services to client entities;
• computer processor circuitry, communicatively coupled with the server set, to operate as a communications control engine and to:
• receive, from at least one of certain of the client entities, client-specific information that is associated with selected ones of data communications services, and that indicates a numbering plan area (NPA) code to be used for one or more selected data communications received by the server set and to be routed on behalf of the at least one of certain of the client entities, wherein the client-specific information is included as part of control data derived from programming instructions corresponding to a second programming language, the second programming language being compatible with a first programming language utilized by the data communications provider or the server set to execute other control data;
• and
• route the one or more selected data communications based on or as a function of the other control data, the client-specific information, and the NPA code.