Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 956 [Rate centres in NPA 956] [Dial plan for NPA 956]

NXX: 403

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-403 A Pharr TX HRLNTXHGFMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 568      
956-403 0 Pharr TX   776A VTX COMMUNICATIONS, LLC 568   2016-06-06   
956-403 1 Pharr TX   5562 METROPCS, INC. 568   2017-03-24   
956-403 2 Pharr TX   5562 METROPCS, INC. 568   2017-03-24   
956-403 3 Pharr TX   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 568   2016-03-10   
956-403 4 Pharr TX   5562 METROPCS, INC. 568   2017-03-24   
956-403 5 Pharr TX   4866 SMARTCOM TELEPHONE, LLC 568   2016-05-16   
956-403 6 Pharr TX   903C ONVOY, LLC - TX 568   2017-05-03   
956-403 7 Pharr TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2025-04-05   
956-403 8 Pharr TX   5562 METROPCS, INC. 568   2017-07-27   
956-403 9 Pharr TX   5562 METROPCS, INC. 568   2017-07-27   

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

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