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: 576

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-576 A Tucson AZ TCSNAZMLRS2  9636 QWEST CORPORATION 668      
520-576 0 Tucson AZ TCSMAZCH1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 668   2006-06-15   
520-576 1 Tucson AZ TCSNAZMLRS2  9636 QWEST CORPORATION 668      
520-576 2 Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2005-11-11   
520-576 3 Tucson AZ TCSMAZCH1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 668   2006-06-15   
520-576 4 Tucson AZ TCSMAZCH1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 668   2006-06-15   
520-576 5 Tucson AZ   829J PAETEC ITEL, LLC 668   2006-03-30   
520-576 6 Tucson AZ TCSMAZCH1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 668   2006-10-10   
520-576 7 Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2009-09-15   
520-576 8 Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2005-11-11   
520-576 9 Tucson AZ TCSNAZMLRS2  9636 QWEST CORPORATION 668      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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