Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 623 [Rate centres in NPA 623] [Dial plan for NPA 623]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
623-776 9 Phoenix AZ   9636 QWEST CORPORATION 666      
623-777 A Phoenix AZ PHNXAZ19DS3  579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 666      
623-777 0 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2013-09-12   
623-777 1 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2013-09-12   
623-777 2 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2013-04-07   
623-777 3 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2013-04-07   
623-777 4 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2013-04-07   
623-777 5 Phoenix AZ   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666   2013-07-31   
623-777 6 Phoenix AZ   630E ONVOY, LLC - AZ 666   2013-04-04   
623-777 7 Phoenix AZ   579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 666   2012-05-04   
623-777 8 Phoenix AZ   630E ONVOY, LLC - AZ 666   2013-04-21   
623-777 9 Phoenix AZ   579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 666   2012-07-01   
623-780 A Phoenix AZ DRVYAZNODS0  9636 QWEST CORPORATION 666      
623-792 A Phoenix AZ PHNZAZDMDS3  7552 LEVEL 3 TELECOM OF ARIZONA, LLC - AZ 666      
623-792 0 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2007-01-19   
623-792 1 Phoenix AZ   7552 LEVEL 3 TELECOM OF ARIZONA, LLC - AZ 666      
623-792 2 Phoenix AZ   7552 LEVEL 3 TELECOM OF ARIZONA, LLC - AZ 666      
623-792 3 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2007-03-12   
623-792 4 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2007-03-12   
623-792 5 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2005-03-30   
623-792 6 Phoenix AZ   7552 LEVEL 3 TELECOM OF ARIZONA, LLC - AZ 666      
623-792 7 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2005-03-30   
623-792 8 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2005-03-30   
623-792 9 Phoenix AZ   7552 LEVEL 3 TELECOM OF ARIZONA, LLC - AZ 666      
623-800 A Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666      
623-800 0 Phoenix AZ   630E ONVOY, LLC - AZ 666   2013-11-23   
623-800 1 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2014-04-04   
623-800 2 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2014-04-04   
623-800 3 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2014-04-04   
623-800 4 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2014-04-04   
623-800 5 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2014-04-04   
623-800 6 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2014-04-04   
623-800 7 Phoenix AZ   630E ONVOY, LLC - AZ 666   2013-11-23   
623-800 8 Phoenix AZ   630E ONVOY, LLC - AZ 666   2013-11-23   
623-800 9 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2014-04-04   
623-806 A Phoenix AZ LNBTAZXCDS3  947E GILA LOCAL EXCHANGE CARRIER, INC. - AZ 666      
623-806 0 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2009-03-13   
623-806 1 Phoenix AZ   947E GILA LOCAL EXCHANGE CARRIER, INC. - AZ 666   2008-10-30   
623-806 2 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2009-04-05   
623-806 3 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2009-04-05   
623-806 4 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2009-04-05   
623-806 5 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2009-04-05   
623-806 6 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2009-05-02   
623-806 7 Phoenix AZ   9636 QWEST CORPORATION 666   2010-02-26   
623-806 8 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2009-04-28   
623-806 9 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2009-06-11   
623-810 A Phoenix AZ PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
623-815 A Phoenix AZ PHNXAZMRDS0  9636 QWEST CORPORATION 666      
623-824 A Phoenix AZ PHNYAZUXDS0  7217 TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 666      
623-824 0 Phoenix AZ   9636 QWEST CORPORATION 666   2006-07-07   

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

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