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: 912

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-912 A Tucson AZ TCSMAZCH1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 668      
520-912 0 Tucson AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668   2014-01-27   
520-912 1 Tucson AZ   5562 METROPCS, INC. 668   2014-01-16   
520-912 2 Tucson AZ   5562 METROPCS, INC. 668   2014-01-19   
520-912 3 Tucson AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668   2013-12-24   
520-912 4 Tucson AZ   318J COMCAST IP PHONE, LLC 668   2013-12-24   
520-912 5 Tucson AZ   5562 METROPCS, INC. 668   2014-02-10   
520-912 6 Tucson AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668   2013-12-22   
520-912 7 Tucson AZ   5562 METROPCS, INC. 668   2014-02-24   
520-912 8 Tucson AZ   5562 METROPCS, INC. 668   2014-03-17   
520-912 9 Tucson AZ   5562 METROPCS, INC. 668   2014-04-14   

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

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