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: 619

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-619 A Nogales AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      
520-619 0 Nogales AZ   6529 T-MOBILE USA, INC. 668      
520-619 1 Nogales AZ   6529 T-MOBILE USA, INC. 668      
520-619 2 Nogales AZ   630E ONVOY, LLC - AZ 668   2016-04-22   
520-619 3 Nogales AZ   630E ONVOY, LLC - AZ 668   2016-04-22   
520-619 4 Nogales AZ   630E ONVOY, LLC - AZ 668   2020-03-30   
520-619 5 Nogales AZ   6529 T-MOBILE USA, INC. 668   2016-05-28   
520-619 6 Nogales AZ   593K MCC TELEPHONY LLC 668   2020-10-12   
520-619 7 Nogales AZ   630E ONVOY, LLC - AZ 668   2016-03-07   
520-619 8 Nogales AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2022-04-12   
520-619 9 Nogales AZ   6529 T-MOBILE USA, INC. 668      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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