Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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NPA: 323 [Rate centres in NPA 323] [Dial plan for NPA 323]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA Eff date Disc date Map
323-350 A Los Angeles: DA 04 CA ELMNCAFIGT1  6529 T-MOBILE USA, INC. 730     map

Last updated: Sat, 14 Apr 2018 22:33:36 UTC

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