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: 430 [Rate centres in NPA 430] [Dial plan for NPA 430]

NXX: 339

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
430-339 A Longview TX LGVWTX06YMD  475J CALLWORKS CORPORATION 554      
430-339 0 Longview TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 554   2025-05-30   
430-339 2 Longview TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 554   2025-05-30   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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