Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 817 [Rate centres in NPA 817] [Dial plan for NPA 817]

NXX: 973

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
817-973 A Fort Worth TX DLLSTXTAXTZ  624H ONVOY SPECTRUM, LLC 552   2024-05-15   
817-973 0 Fort Worth TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2024-05-16   
817-973 1 Fort Worth TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2024-05-16   
817-973 2 Fort Worth TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2024-05-16   
817-973 3 Fort Worth TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2024-06-22   
817-973 4 Fort Worth TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2024-06-22   
817-973 5 Fort Worth TX DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2024-05-17   
817-973 6 Fort Worth TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2024-06-22   
817-973 7 Fort Worth TX DLLATX37EMD  197D VONAGE AMERICA LLC 552   2024-05-16   
817-973 8 Fort Worth TX DLLSTXTAXTZ  624H ONVOY SPECTRUM, LLC 552   2024-05-15   
817-973 9 Fort Worth TX DLLSTXTAXTZ  624H ONVOY SPECTRUM, LLC 552   2024-05-15   

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

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