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: 606

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-606 A Tucson AZ TCSMAZOI3MD  5562 METROPCS, INC. 668      
520-606 0 Tucson AZ   939H COMMIO, LLC 668   2022-11-11   
520-606 1 Tucson AZ   5562 METROPCS, INC. 668   2014-03-29   
520-606 2 Tucson AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2024-08-21   
520-606 3 Tucson AZ   490J DISH WIRELESS, LLC 668   2024-12-02   
520-606 4 Tucson AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2024-08-21   
520-606 5 Tucson AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 668   2023-01-14   
520-606 6 Tucson AZ   939H COMMIO, LLC 668   2022-11-11   
520-606 7 Tucson AZ   939H COMMIO, LLC 668   2022-11-11   
520-606 8 Tucson AZ   939H COMMIO, LLC 668   2022-11-11   
520-606 9 Tucson AZ   624H ONVOY SPECTRUM, LLC 668   2023-10-11   

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

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