Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 520 [Rate centres in NPA 520] [Dial plan for NPA 520]

NXX: 650

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-650 A Whitlow AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666      
520-650 0 Whitlow AZ   579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 666   2021-01-03   
520-650 1 Whitlow AZ   073H TELNYX LLC 666   2021-04-09   
520-650 2 Whitlow AZ   630E ONVOY, LLC - AZ 666   2022-06-08   
520-650 3 Whitlow AZ   630E ONVOY, LLC - AZ 666   2021-07-03   
520-650 4 Whitlow AZ   624H ONVOY SPECTRUM, LLC 666   2021-07-24   
520-650 5 Whitlow AZ   630E ONVOY, LLC - AZ 666   2020-12-29   
520-650 6 Whitlow AZ   630E ONVOY, LLC - AZ 666   2020-12-29   
520-650 7 Whitlow AZ   630E ONVOY, LLC - AZ 666   2021-04-15   
520-650 8 Whitlow AZ   630E ONVOY, LLC - AZ 666   2021-04-15   
520-650 9 Whitlow AZ   630E ONVOY, LLC - AZ 666   2021-08-08   

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

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