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: 779

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-779 A Sullivan City TX HRLNTXHGXUX  516J TON80 COMMUNICATIONS, LLC 568      
956-779 0 Sullivan City TX MCALTX935MD  073H TELNYX LLC 568   2022-06-06   
956-779 1 Sullivan City TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2022-12-22   
956-779 2 Sullivan City TX   4290 STPCS JOINT VENTURE, LLC 568   2025-03-10   
956-779 5 Sullivan City TX HRLNTXKX8MD  5562 METROPCS, INC. 568   2023-08-07   
956-779 7 Sullivan City TX HRLNTXHGXUX  516J TON80 COMMUNICATIONS, LLC 568   2022-06-05   
956-779 8 Sullivan City TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2023-08-14   
956-779 9 Sullivan City TX HRLNTXDU5MD  490J DISH WIRELESS, LLC 568   2022-06-07   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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