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: 506

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-506 A Harlingen TX HRLNTXHG8MD  073H TELNYX LLC 568      
956-506 0 Harlingen TX   903C ONVOY, LLC - TX 568   2023-10-16   
956-506 1 Harlingen TX   073H TELNYX LLC 568   2020-01-23   
956-506 2 Harlingen TX   624H ONVOY SPECTRUM, LLC 568   2023-12-10   
956-506 3 Harlingen TX   903C ONVOY, LLC - TX 568   2022-01-09   
956-506 4 Harlingen TX   903C ONVOY, LLC - TX 568   2022-01-09   
956-506 5 Harlingen TX   903C ONVOY, LLC - TX 568   2022-01-09   
956-506 6 Harlingen TX   624H ONVOY SPECTRUM, LLC 568   2023-12-10   
956-506 7 Harlingen TX   624H ONVOY SPECTRUM, LLC 568   2023-12-10   
956-506 8 Harlingen TX   624H ONVOY SPECTRUM, LLC 568   2023-12-10   
956-506 9 Harlingen TX   624H ONVOY SPECTRUM, LLC 568   2023-12-10   

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

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