Local Calling Guide

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NPA: 956 [Rate centres in NPA 956] [Dial plan for NPA 956]

NXX: 263

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-263 A Rio Grande City TX HRLNTXKX8MD  5562 METROPCS, INC. 568      
956-263 0 Rio Grande City TX HRLNTXKX8MD  5562 METROPCS, INC. 568      
956-263 1 Rio Grande City TX HRLNTXHGXYX  793K TWC IP ENABLED SERVICES, LLC 568   2005-08-21   
956-263 2 Rio Grande City TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2026-03-06   
956-263 3 Rio Grande City TX HRLNTXKX8MD  5562 METROPCS, INC. 568   2013-06-21   
956-263 4 Rio Grande City TX HRLNTXHGBMD  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 568   2007-06-08   
956-263 5 Rio Grande City TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2008-05-27   
956-263 6 Rio Grande City TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2026-05-09   
956-263 7 Rio Grande City TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2026-07-31   
956-263 8 Rio Grande City TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2008-05-27   
956-263 9 Rio Grande City TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2008-05-27   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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