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: 446

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-446 A Sullivan City TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568      
956-446 0 Sullivan City TX   903C ONVOY, LLC - TX 568   2017-05-21   
956-446 1 Sullivan City TX   073H TELNYX LLC 568   2021-04-09   
956-446 2 Sullivan City TX   903C ONVOY, LLC - TX 568   2020-08-24   
956-446 3 Sullivan City TX   903C ONVOY, LLC - TX 568   2020-08-24   
956-446 4 Sullivan City TX   903C ONVOY, LLC - TX 568   2022-01-25   
956-446 5 Sullivan City TX   903C ONVOY, LLC - TX 568   2021-06-03   
956-446 6 Sullivan City TX   903C ONVOY, LLC - TX 568   2021-06-03   
956-446 7 Sullivan City TX   624H ONVOY SPECTRUM, LLC 568   2021-06-24   
956-446 8 Sullivan City TX   903C ONVOY, LLC - TX 568   2021-09-24   
956-446 9 Sullivan City TX   903C ONVOY, LLC - TX 568   2021-09-24   

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

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