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: 820

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-820 A McAllen TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2025-12-20   
956-820 5 McAllen TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2025-12-20   
956-820 6 McAllen TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2025-12-20   
956-820 7 McAllen TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2025-12-20   
956-820 8 McAllen TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2025-12-20   
956-820 9 McAllen TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2025-12-20   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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