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: 571

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-571 A Tucson AZ TCSNAZCRDS0  9636 QWEST CORPORATION 668      
520-571 0 Tucson AZ   9636 QWEST CORPORATION 668      
520-571 1 Tucson AZ   9636 QWEST CORPORATION 668      
520-571 2 Tucson AZ   9636 QWEST CORPORATION 668      
520-571 4 Tucson AZ   9636 QWEST CORPORATION 668      
520-571 6 Tucson AZ   9636 QWEST CORPORATION 668      
520-571 7 Tucson AZ   9636 QWEST CORPORATION 668      
520-571 8 Tucson AZ   9636 QWEST CORPORATION 668      
520-571 9 Tucson AZ   9636 QWEST CORPORATION 668      

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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