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: 813

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
817-813 A Azle TX AZLETXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
817-813 0 Azle TX   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
817-813 1 Azle TX   903C ONVOY, LLC - TX 552   2016-03-28   
817-813 2 Azle TX   903C ONVOY, LLC - TX 552   2016-03-28   
817-813 3 Azle TX   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2016-08-05   
817-813 4 Azle TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2016-10-16   
817-813 5 Azle TX   903C ONVOY, LLC - TX 552   2016-10-30   
817-813 6 Azle TX   903C ONVOY, LLC - TX 552   2016-10-30   
817-813 7 Azle TX   508J CENTURYLINK COMMUNICATIONS, LLC 552   2014-05-14   
817-813 8 Azle TX   903C ONVOY, LLC - TX 552   2014-10-07   
817-813 9 Azle TX   903C ONVOY, LLC - TX 552   2014-10-07   

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

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