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: 496

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-496 A Harlingen TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-496 0 Harlingen TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2023-08-14   
956-496 2 Harlingen TX HRLNTXHGXYX  793K TWC IP ENABLED SERVICES, LLC 568   2015-09-18   
956-496 8 Harlingen TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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