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: 704

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-704 A Tucson AZ TCSMAZCH1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 668      
520-704 0 Tucson AZ   5562 METROPCS, INC. 668   2013-11-15   
520-704 1 Tucson AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668   2010-05-15   
520-704 2 Tucson AZ   6529 T-MOBILE USA, INC. 668   2012-02-17   
520-704 3 Tucson AZ   6529 T-MOBILE USA, INC. 668   2012-02-17   
520-704 4 Tucson AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668   2010-05-15   
520-704 5 Tucson AZ   6529 T-MOBILE USA, INC. 668   2012-02-17   
520-704 6 Tucson AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 668   2010-06-05   
520-704 7 Tucson AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 668   2010-06-18   
520-704 8 Tucson AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 668   2010-06-18   
520-704 9 Tucson AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 668   2010-06-18   

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

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