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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Switch: LGVWTX06X0X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
430-323 A Longview TX 732J NUSO, LLC 554      
430-323 2 Longview TX 732J NUSO, LLC 554   2023-04-09   
430-323 5 Longview TX 732J NUSO, LLC 554   2023-11-25   
430-323 6 Longview TX 732J NUSO, LLC 554   2023-11-25   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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