The Industry Numbering Committee (INC) has agreed that the 533 NPA will be used to relieve the 500 NPA, which is forecasted to exhaust in second quarter 2009.
The 500 NPA is a "non-geographic Service Access Code (SAC) used for personal communications services." According to the Personal Communications Services (PCS) (5YY) NXX Code Guidelines, "personal communication service is a set of capabilities that allows some combination of personal mobility, terminal mobility, and service profile management. It enables each personal communication service user to participate in a user-defined set of subscribed services, and to initiate and/or receive calls on the basis of some combination of a personal number, terminal number, and a service profile across multiple networks at any terminal, fixed or mobile, irrespective of geographic location."
While the activation date for NPA 533 has yet to be determined, further details regarding this relief plan may be found in Planning Letter 394 (which supersedes Planning Letter 382), at http://www.nanpa.com/.
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