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: 379

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-379 A Douglas AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-379 0 Douglas AZ   579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 668   2020-06-18   
520-379 1 Douglas AZ   624H ONVOY SPECTRUM, LLC 668   2020-06-26   
520-379 2 Douglas AZ   624H ONVOY SPECTRUM, LLC 668   2020-06-26   
520-379 3 Douglas AZ   630E ONVOY, LLC - AZ 668   2019-07-11   
520-379 4 Douglas AZ   624H ONVOY SPECTRUM, LLC 668   2020-06-26   
520-379 5 Douglas AZ   630E ONVOY, LLC - AZ 668   2019-12-09   
520-379 6 Douglas AZ   630E ONVOY, LLC - AZ 668   2021-06-28   
520-379 7 Douglas AZ   630E ONVOY, LLC - AZ 668   2019-07-11   
520-379 8 Douglas AZ   630E ONVOY, LLC - AZ 668   2020-11-24   
520-379 9 Douglas AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668   2019-12-20   

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

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