Local Calling Guide

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NPA: 512 [Rate centres in NPA 512] [Dial plan for NPA 512]

NXX: 856

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
512-856 A Coupland TX CPLDTXXARS0  2154 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 558      
512-856 0 Coupland TX   2154 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 558      
512-856 1 Coupland TX   903C ONVOY, LLC - TX 558   2016-03-01   
512-856 2 Coupland TX   2154 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 558      
512-856 3 Coupland TX   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 558      
512-856 4 Coupland TX   004F BANDWIDTH.COM CLEC, LLC - TX 558   2011-07-04   
512-856 5 Coupland TX   004F BANDWIDTH.COM CLEC, LLC - TX 558   2015-02-14   
512-856 6 Coupland TX   903C ONVOY, LLC - TX 558   2016-03-01   
512-856 7 Coupland TX   903C ONVOY, LLC - TX 558   2013-02-20   
512-856 8 Coupland TX   508J CENTURYLINK COMMUNICATIONS, LLC 558   2014-04-10   
512-856 9 Coupland TX   177F PEERLESS NETWORK OF TEXAS, LLC - TX 558   2014-05-01   

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

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