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- NANPA holds overall responsibility for the neutral administration of NANP numbering resources, subject to directives from regulatory authorities in the countries that share the NANP. NANPA's responsibilities include assignment of NANP resources, and, in the U.S. and its territories, coordination of area code relief planning and collection of utilization and forecast data.
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- inc, Interchangeable NPAs, NANP Area, North American Number Plan (NANP), North American Numbering Plan Numbering Resource Utilization/Forecasting (NRUF) Report, NPA Code Relief