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: 779

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-779 A Willcox AZ TCSNAZMAXIX  587F BANDWIDTH.COM CLEC, LLC - AZ 668      
520-779 0 Willcox AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 668   2018-11-10   
520-779 1 Willcox AZ   579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 668   2018-11-11   
520-779 2 Willcox AZ   630E ONVOY, LLC - AZ 668   2019-12-27   
520-779 3 Willcox AZ   630E ONVOY, LLC - AZ 668   2020-10-10   
520-779 4 Willcox AZ   630E ONVOY, LLC - AZ 668   2020-10-10   
520-779 5 Willcox AZ   630E ONVOY, LLC - AZ 668   2019-07-11   
520-779 6 Willcox AZ   7217 TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 668   2020-07-01   
520-779 7 Willcox AZ   630E ONVOY, LLC - AZ 668   2019-07-11   
520-779 8 Willcox AZ   630E ONVOY, LLC - AZ 668   2020-11-24   
520-779 9 Willcox AZ   630E ONVOY, LLC - AZ 668   2020-11-24   

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

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