Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 512 [Rate centres in NPA 512] [Dial plan for NPA 512]

NXX: 543

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
512-543 A Rockdale TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558      
512-543 0 Rockdale TX   624H ONVOY SPECTRUM, LLC 558   2022-02-28   
512-543 1 Rockdale TX   177F PEERLESS NETWORK OF TEXAS, LLC - TX 558   2019-10-30   
512-543 2 Rockdale TX   903C ONVOY, LLC - TX 558   2010-11-01   
512-543 3 Rockdale TX   903C ONVOY, LLC - TX 558   2014-12-03   
512-543 4 Rockdale TX   903C ONVOY, LLC - TX 558   2016-07-29   
512-543 5 Rockdale TX   516C AT&T CORP. 558   2011-06-07   
512-543 6 Rockdale TX   5562 METROPCS, INC. 558   2016-11-21   
512-543 7 Rockdale TX   903C ONVOY, LLC - TX 558   2013-02-20   
512-543 8 Rockdale TX   5562 METROPCS, INC. 558   2016-09-12   
512-543 9 Rockdale TX   903C ONVOY, LLC - TX 558   2014-04-25   

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

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