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: 697

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-697 A Port Isabel TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568      
956-697 0 Port Isabel TX   073H TELNYX LLC 568   2021-03-28   
956-697 1 Port Isabel TX   515J IP HORIZON LLC 568   2022-03-31   
956-697 2 Port Isabel TX   939H COMMIO, LLC 568   2022-12-12   
956-697 3 Port Isabel TX   624H ONVOY SPECTRUM, LLC 568   2021-12-04   
956-697 4 Port Isabel TX   624H ONVOY SPECTRUM, LLC 568   2021-12-04   
956-697 5 Port Isabel TX   515J IP HORIZON LLC 568   2023-12-28   
956-697 6 Port Isabel TX   624H ONVOY SPECTRUM, LLC 568   2021-06-24   
956-697 7 Port Isabel TX   903C ONVOY, LLC - TX 568   2021-10-16   
956-697 8 Port Isabel TX   903C ONVOY, LLC - TX 568   2021-10-16   
956-697 9 Port Isabel TX   515J IP HORIZON LLC 568   2023-12-28   

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

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