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
623-666 6 Phoenix AZ   630E ONVOY, LLC - AZ 666   2013-01-10   
623-666 7 Phoenix AZ   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666   2013-08-10   
623-666 8 Phoenix AZ   630E ONVOY, LLC - AZ 666   2013-11-01   
623-666 9 Phoenix AZ   630E ONVOY, LLC - AZ 666   2013-11-01   
623-670 A Phoenix AZ PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
623-670 0 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2003-08-04   
623-670 1 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2003-08-04   
623-670 2 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2003-08-04   
623-670 3 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2003-08-04   
623-670 4 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2003-08-04   
623-670 5 Phoenix AZ   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666   2006-08-31   
623-670 6 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2003-11-04   
623-670 7 Phoenix AZ   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666   2005-04-24   
623-670 8 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2003-11-04   
623-670 9 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
623-680 A Phoenix AZ PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
623-683 A Phoenix AZ PHNXAZMAX1Z  318J COMCAST IP PHONE, LLC 666      
623-683 0 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2017-12-08   
623-683 1 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2017-12-08   
623-683 2 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2017-12-08   
623-683 3 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2017-12-08   
623-683 4 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2017-12-08   
623-683 5 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2017-12-08   
623-683 6 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2017-12-08   
623-683 7 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2017-12-08   
623-683 8 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2017-12-08   
623-683 9 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2017-12-08   
623-687 A Phoenix AZ PHNZAZZJDS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666      
623-687 0 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2004-06-27   
623-687 1 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2004-06-27   
623-687 2 Phoenix AZ   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666      
623-687 3 Phoenix AZ   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666      
623-687 4 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2004-05-17   
623-687 5 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2004-05-17   
623-687 6 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2004-05-17   
623-687 7 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2004-05-17   
623-687 8 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2004-05-17   
623-687 9 Phoenix AZ   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666   2006-08-31   
623-688 A Phoenix AZ PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
623-688 0 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2010-04-25   
623-688 1 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2010-04-25   
623-688 2 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2010-04-25   
623-688 3 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2010-04-25   
623-688 4 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
623-688 5 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2010-04-25   
623-688 6 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
623-688 7 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
623-688 8 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2010-05-02   
623-688 9 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
623-691 A Phoenix AZ PHNXAZMYDS0  9636 QWEST CORPORATION 666      

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

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