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
623-471 7 Phoenix AZ   630E ONVOY, LLC - AZ 666   2019-11-07   
623-471 8 Phoenix AZ   630E ONVOY, LLC - AZ 666   2019-11-07   
623-471 9 Phoenix AZ   630E ONVOY, LLC - AZ 666   2019-11-07   
623-473 A Phoenix AZ PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
623-473 0 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2019-07-13   
623-473 1 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2019-07-13   
623-473 2 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2019-07-13   
623-473 3 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2019-07-13   
623-473 4 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2019-07-13   
623-473 5 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2019-07-13   
623-473 6 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2019-07-13   
623-473 7 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2019-07-13   
623-473 8 Phoenix AZ   508J CENTURYLINK COMMUNICATIONS, LLC 666   2019-07-13   
623-473 9 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2018-11-17   
623-474 A Phoenix AZ GLDLAZMADS0  9636 QWEST CORPORATION 666      
623-476 A Phoenix AZ PHNZAZZJDS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666      
623-476 0 Phoenix AZ   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666      
623-476 1 Phoenix AZ   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666      
623-476 2 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2004-11-11   
623-476 3 Phoenix AZ   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666      
623-476 4 Phoenix AZ   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666      
623-476 5 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2004-11-11   
623-476 6 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2006-03-09   
623-476 7 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2004-11-11   
623-476 8 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2004-11-11   
623-476 9 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2006-03-09   
623-478 A Phoenix AZ TLSNAZMADS0  9636 QWEST CORPORATION 666      
623-478 0 Phoenix AZ   9636 QWEST CORPORATION 666      
623-478 1 Phoenix AZ   9636 QWEST CORPORATION 666      
623-478 2 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2005-02-06   
623-478 3 Phoenix AZ   9636 QWEST CORPORATION 666      
623-478 4 Phoenix AZ   9636 QWEST CORPORATION 666      
623-478 5 Phoenix AZ   9636 QWEST CORPORATION 666      
623-478 6 Phoenix AZ   9636 QWEST CORPORATION 666      
623-478 7 Phoenix AZ   9636 QWEST CORPORATION 666      
623-478 8 Phoenix AZ   9636 QWEST CORPORATION 666      
623-478 9 Phoenix AZ   9636 QWEST CORPORATION 666      
623-486 A Phoenix AZ PHNXAZPRDS0  9636 QWEST CORPORATION 666      
623-487 A Phoenix AZ PHNXAZPRDS0  9636 QWEST CORPORATION 666      
623-492 A Phoenix AZ DRVYAZNODS0  9636 QWEST CORPORATION 666      
623-498 A Phoenix AZ PHNXAZMAXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 666      
623-498 0 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2010-06-14   
623-498 1 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2010-07-23   
623-498 2 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2010-07-23   
623-498 3 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2010-07-23   
623-498 4 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2010-07-23   
623-498 5 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2010-07-23   
623-498 6 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2010-07-23   
623-498 7 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2010-08-06   
623-498 8 Phoenix AZ   630E ONVOY, LLC - AZ 666   2010-08-14   

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

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