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: 840

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-840 A Brownsville TX HRLNTXHGXXX  318J COMCAST IP PHONE, LLC 568      
956-840 0 Brownsville TX   4290 STPCS JOINT VENTURE, LLC 568   2023-07-11   
956-840 1 Brownsville TX   318J COMCAST IP PHONE, LLC 568   2023-07-10   
956-840 2 Brownsville TX   903C ONVOY, LLC - TX 568   2023-07-11   
956-840 3 Brownsville TX   903C ONVOY, LLC - TX 568   2023-07-11   
956-840 4 Brownsville TX   903C ONVOY, LLC - TX 568   2023-07-11   
956-840 5 Brownsville TX   903C ONVOY, LLC - TX 568   2023-08-14   
956-840 6 Brownsville TX   624H ONVOY SPECTRUM, LLC 568   2023-12-10   
956-840 7 Brownsville TX   4290 STPCS JOINT VENTURE, LLC 568   2023-07-11   
956-840 8 Brownsville TX   4290 STPCS JOINT VENTURE, LLC 568   2023-07-11   
956-840 9 Brownsville TX   4290 STPCS JOINT VENTURE, LLC 568   2023-07-11   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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