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: 433

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-433 A Tucson AZ TCSNAZMAVMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668      
520-433 0 Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2013-11-15   
520-433 1 Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2014-01-17   
520-433 2 Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2013-03-15   
520-433 3 Tucson AZ TCSNAZMAGT0  4793 XO ARIZONA, INC. 668   2013-01-14   
520-433 4 Tucson AZ TCSNAZMAVMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668   2013-01-11   
520-433 5 Tucson AZ TCSNAZMAGT0  4793 XO ARIZONA, INC. 668   2013-01-14   
520-433 6 Tucson AZ TCSNAZMAGT0  4793 XO ARIZONA, INC. 668   2013-01-14   
520-433 7 Tucson AZ TCSNAZMAGT0  4793 XO ARIZONA, INC. 668   2013-01-14   
520-433 8 Tucson AZ TCSNAZMAGT0  4793 XO ARIZONA, INC. 668   2013-01-14   
520-433 9 Tucson AZ TCSNAZMAVMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668   2013-04-15   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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