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: 361

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
430-361 A Whitehouse TX LGVWTXPLXEX  903C ONVOY, LLC - TX 554   2024-05-13   
430-361 0 Whitehouse TX LGVWTXPLXEX  903C ONVOY, LLC - TX 554   2024-05-13   
430-361 1 Whitehouse TX LGVWTXPLXMY  793K TWC IP ENABLED SERVICES, LLC 554   2025-01-26   
430-361 2 Whitehouse TX   425J CSC WIRELESS, LLC 554   2026-10-30   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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