Local Calling Guide

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NPA: 520 [Rate centres in NPA 520] [Dial plan for NPA 520]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-820 6 Tucson AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2005-04-09   
520-820 7 Tucson AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2005-04-09   
520-820 8 Tucson AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2005-05-09   
520-820 9 Tucson AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2005-05-09   
520-822 A Tucson AZ TCSNAZSWDS0  9636 QWEST CORPORATION 668      
520-822 0 Tucson AZ   9636 QWEST CORPORATION 668      
520-822 1 Tucson AZ   9636 QWEST CORPORATION 668      
520-822 2 Tucson AZ   9636 QWEST CORPORATION 668      
520-822 3 Tucson AZ   9636 QWEST CORPORATION 668      
520-822 4 Tucson AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2008-09-19   
520-822 5 Tucson AZ   9636 QWEST CORPORATION 668      
520-822 6 Tucson AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668   2006-02-23   
520-822 7 Tucson AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668   2006-02-23   
520-822 8 Tucson AZ   318J COMCAST IP PHONE, LLC 668   2005-10-25   
520-822 9 Tucson AZ   9636 QWEST CORPORATION 668      
520-823 A Sasabe AZ SASBAZXCGT0  2171 ARIZONA TEL. CO. 668      
520-823 0 Sasabe AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668   2026-01-03   
520-823 2 Sasabe AZ   2171 ARIZONA TEL. CO. 668      
520-823 4 Sasabe AZ   145J TERRA NOVA TELECOM INC. 668   2025-07-20   
520-824 A Sunizona AZ PERCAZXCDS0  2176 VALLEY TEL COOP INC 668      
520-825 A Tucson AZ CRNDAZMADS1  9636 QWEST CORPORATION 668      
520-826 A Pearce AZ PERCAZXCDS0  2176 VALLEY TEL COOP INC 668      
520-827 A Superior AZ PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
520-827 0 Superior AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
520-827 1 Superior AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2006-09-11   
520-827 2 Superior AZ   630E ONVOY, LLC - AZ 666   2014-10-22   
520-827 3 Superior AZ   630E ONVOY, LLC - AZ 666   2012-12-16   
520-827 4 Superior AZ   630E ONVOY, LLC - AZ 666   2014-10-22   
520-827 5 Superior AZ   145J TERRA NOVA TELECOM INC. 666   2024-07-31   
520-827 6 Superior AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2008-04-28   
520-827 7 Superior AZ   630E ONVOY, LLC - AZ 666   2007-06-04   
520-827 8 Superior AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2013-10-06   
520-827 9 Superior AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2005-01-17   
520-829 A Tucson AZ TCSNAZMAVMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668      
520-829 0 Tucson AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668   2004-12-27   
520-829 1 Tucson AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668   2004-12-27   
520-829 2 Tucson AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668   2006-07-05   
520-829 3 Tucson AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668   2004-09-28   
520-829 4 Tucson AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668      
520-829 5 Tucson AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668   2004-06-17   
520-829 6 Tucson AZ   318J COMCAST IP PHONE, LLC 668   2004-12-03   
520-829 7 Tucson AZ   318J COMCAST IP PHONE, LLC 668   2004-12-03   
520-829 8 Tucson AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668   2006-07-05   
520-829 9 Tucson AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668   2005-01-19   
520-831 A Prescott AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666      
520-831 0 Prescott AZ   6529 T-MOBILE USA, INC. 666      
520-831 1 Prescott AZ   6529 T-MOBILE USA, INC. 666      
520-831 3 Prescott AZ   6529 T-MOBILE USA, INC. 666      
520-831 4 Prescott AZ   6529 T-MOBILE USA, INC. 666      
520-833 A Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668      
520-833 0 Tucson AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2015-11-25   
520-833 1 Tucson AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2015-11-25   
520-833 2 Tucson AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2015-12-08   
520-833 3 Tucson AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2016-06-15   
520-833 4 Tucson AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2016-06-15   
520-833 5 Tucson AZ   7465 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AZ 668   2015-10-26   
520-833 6 Tucson AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2016-08-04   
520-833 7 Tucson AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2016-09-08   
520-833 8 Tucson AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2015-09-30   
520-833 9 Tucson AZ   630E ONVOY, LLC - AZ 668   2017-07-04   
520-834 A Tucson AZ TCSMAZCH1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 668      
520-834 0 Tucson AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668      
520-834 1 Tucson AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668      
520-834 2 Tucson AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668   2005-03-17   
520-834 3 Tucson AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668   2005-03-17   
520-834 4 Tucson AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668   2005-03-17   
520-834 5 Tucson AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668   2005-03-17   
520-834 6 Tucson AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668   2005-03-17   
520-834 7 Tucson AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668   2005-03-17   
520-834 8 Tucson AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668   2006-08-28   
520-834 9 Tucson AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668      
520-836 A Casa Grande AZ CSGRAZMADS0  9636 QWEST CORPORATION 666      
520-837 A Tucson AZ TCSNAZMAXKX  7217 TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 668      
520-837 0 Tucson AZ   7217 TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 668      
520-837 1 Tucson AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 668   2010-06-18   
520-837 2 Tucson AZ   9636 QWEST CORPORATION 668   2005-07-28   
520-837 3 Tucson AZ   9636 QWEST CORPORATION 668   2005-07-28   
520-837 4 Tucson AZ   9636 QWEST CORPORATION 668   2005-07-28   
520-837 5 Tucson AZ   9636 QWEST CORPORATION 668   2005-07-28   
520-837 6 Tucson AZ   9636 QWEST CORPORATION 668   2005-07-28   
520-837 7 Tucson AZ   9636 QWEST CORPORATION 668   2005-07-28   
520-837 8 Tucson AZ   9636 QWEST CORPORATION 668   2005-07-28   
520-837 9 Tucson AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2008-10-30   
520-838 A Tucson AZ TCSNAZMADS1  9636 QWEST CORPORATION 668      
520-838 0 Tucson AZ   318J COMCAST IP PHONE, LLC 668   2008-02-29   
520-838 1 Tucson AZ   6529 T-MOBILE USA, INC. 668   2006-03-20   
520-838 2 Tucson AZ   9636 QWEST CORPORATION 668      
520-838 3 Tucson AZ   9636 QWEST CORPORATION 668      
520-838 4 Tucson AZ   6529 T-MOBILE USA, INC. 668   2006-12-16   
520-838 5 Tucson AZ   9636 QWEST CORPORATION 668      
520-838 6 Tucson AZ   9636 QWEST CORPORATION 668      
520-838 7 Tucson AZ   9636 QWEST CORPORATION 668      
520-838 8 Tucson AZ   630E ONVOY, LLC - AZ 668   2005-08-11   
520-838 9 Tucson AZ   630E ONVOY, LLC - AZ 668   2008-07-25   
520-839 A Nogales AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      
520-839 0 Nogales AZ   630E ONVOY, LLC - AZ 668   2016-03-07   
520-839 1 Nogales AZ   630E ONVOY, LLC - AZ 668   2021-07-03   
520-839 2 Nogales AZ   6529 T-MOBILE USA, INC. 668   2020-08-22   
520-839 3 Nogales AZ   630E ONVOY, LLC - AZ 668   2021-07-03   
520-839 4 Nogales AZ   630E ONVOY, LLC - AZ 668   2021-07-03   

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

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