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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-495 A Tucson AZ TCSMAZEEDS0  7552 LEVEL 3 TELECOM OF ARIZONA, LLC - AZ 668      
520-495 0 Tucson AZ   7184 MCLEODUSA TELECOMMUNICATIONS SERVICES, INC.- AZ 668   2005-09-17   
520-495 1 Tucson AZ   7552 LEVEL 3 TELECOM OF ARIZONA, LLC - AZ 668      
520-495 2 Tucson AZ   630E ONVOY, LLC - AZ 668   2005-07-11   
520-495 3 Tucson AZ   630E ONVOY, LLC - AZ 668   2005-07-11   
520-495 4 Tucson AZ   7078 COX ARIZONA TELCOM, INC. - AZ 668   2005-08-17   
520-495 5 Tucson AZ   7078 COX ARIZONA TELCOM, INC. - AZ 668   2005-08-17   
520-495 6 Tucson AZ   7552 LEVEL 3 TELECOM OF ARIZONA, LLC - AZ 668      
520-495 7 Tucson AZ   7552 LEVEL 3 TELECOM OF ARIZONA, LLC - AZ 668   2005-11-03   
520-495 8 Tucson AZ   6529 T-MOBILE USA, INC. 668   2006-01-05   
520-495 9 Tucson AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668   2006-03-05   

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

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