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: 613

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-613 A Tucson AZ TCSMAZCH1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 668      
520-613 0 Tucson AZ   630E ONVOY, LLC - AZ 668   2022-03-13   
520-613 1 Tucson AZ   630E ONVOY, LLC - AZ 668   2022-03-13   
520-613 2 Tucson AZ   630E ONVOY, LLC - AZ 668   2022-03-13   
520-613 3 Tucson AZ   630E ONVOY, LLC - AZ 668   2022-03-13   
520-613 4 Tucson AZ   7217 TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 668   2022-03-13   
520-613 5 Tucson AZ   7217 TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 668   2022-03-13   
520-613 6 Tucson AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668   2022-03-12   
520-613 7 Tucson AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668   2022-03-12   
520-613 8 Tucson AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668   2022-03-12   
520-613 9 Tucson AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668   2022-03-12   

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

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