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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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   793K TWC IP ENABLED SERVICES, LLC 554   2025-01-26   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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