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NALENND North American Local Exchnage NPA NXX Database Standard Edition. The Standard Edition is a basic NPA NXX database and provides a basic geography of the North American Public Switched Telephone Network.
You can use this data to identify all active NPA NXX combinations at the 10,000 block level, what the basic line type is, and what local exchanges they are being used for.
This data set is suitable for any application that needs to determine if an NPA NXX combination is valid and where it is being used.
Program system requirements: 8.68 MB free disk space
