Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 430 [Rate centres in NPA 430] [Dial plan for NPA 430]

NXX: 543

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
430-543 A Simms TX TXRKTXXANMD  903C ONVOY, LLC - TX 554      
430-543 0 Simms TX LGVWTXPLXZX  073H TELNYX LLC 554   2021-04-09   
430-543 1 Simms TX   793K TWC IP ENABLED SERVICES, LLC 554   2023-12-10   
430-543 3 Simms TX TXRKTXXANMD  903C ONVOY, LLC - TX 554   2021-03-19   
430-543 5 Simms TX TXRKTXXANMD  903C ONVOY, LLC - TX 554   2018-12-28   
430-543 6 Simms TX TXRKTXXAHMD  624H ONVOY SPECTRUM, LLC 554   2021-12-04   
430-543 7 Simms TX TXRKTXXAHMD  624H ONVOY SPECTRUM, LLC 554   2021-12-04   
430-543 8 Simms TX TXRKTXXAHMD  624H ONVOY SPECTRUM, LLC 554   2021-06-28   

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

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