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: 313

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
430-313 A Winfield TX LGVWTXPLXRX  318C CEBRIDGE TELECOM TX , L.P. - TX 554      
430-313 0 Winfield TX   903C ONVOY, LLC - TX 554   2023-09-15   
430-313 3 Winfield TX   145J TERRA NOVA TELECOM INC. 554   2026-01-11   
430-313 6 Winfield TX   318C CEBRIDGE TELECOM TX , L.P. - TX 554   2023-03-12   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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