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
623-432 3 Phoenix AZ   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666   2010-02-08   
623-432 4 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2010-03-20   
623-432 5 Phoenix AZ   630E ONVOY, LLC - AZ 666   2011-01-09   
623-432 6 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2009-11-16   
623-432 7 Phoenix AZ   630E ONVOY, LLC - AZ 666   2011-01-09   
623-432 8 Phoenix AZ   630E ONVOY, LLC - AZ 666   2010-03-08   
623-432 9 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2010-04-25   
623-433 A Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666      
623-433 0 Phoenix AZ   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666   2005-12-12   
623-433 1 Phoenix AZ   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666   2005-12-12   
623-433 2 Phoenix AZ   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666   2005-12-12   
623-433 3 Phoenix AZ   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666   2005-12-12   
623-433 4 Phoenix AZ   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666   2005-12-12   
623-433 5 Phoenix AZ   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666   2005-12-12   
623-433 6 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2005-11-12   
623-433 7 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2005-12-05   
623-433 8 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2005-12-05   
623-433 9 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2005-12-05   
623-434 A Phoenix AZ DRVYAZNODS0  9636 QWEST CORPORATION 666      
623-435 A Phoenix AZ GLDLAZMADS0  9636 QWEST CORPORATION 666      
623-439 A Phoenix AZ PHNXAZMAXQY  624H ONVOY SPECTRUM, LLC 666      
623-439 0 Phoenix AZ   624H ONVOY SPECTRUM, LLC 666   2017-08-27   
623-439 1 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2018-09-03   
623-439 2 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2018-08-17   
623-439 3 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2018-09-03   
623-439 4 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2018-09-03   
623-439 5 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2018-09-03   
623-439 6 Phoenix AZ   630E ONVOY, LLC - AZ 666   2018-09-03   
623-439 7 Phoenix AZ   630E ONVOY, LLC - AZ 666   2018-09-03   
623-439 8 Phoenix AZ   630E ONVOY, LLC - AZ 666   2018-09-03   
623-439 9 Phoenix AZ   630E ONVOY, LLC - AZ 666   2018-09-03   
623-440 A Phoenix AZ PHNXAZMAX1Z  318J COMCAST IP PHONE, LLC 666      
623-440 0 Phoenix AZ   073H TELNYX LLC 666   2018-07-13   
623-440 1 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2018-07-09   
623-440 2 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2018-07-09   
623-440 3 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2018-07-09   
623-440 4 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2018-07-09   
623-440 5 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2018-07-09   
623-440 6 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2018-07-09   
623-440 7 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2018-07-09   
623-440 8 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2018-07-09   
623-440 9 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2018-07-09   
623-444 A Phoenix AZ PHNYAZUXDS0  7217 TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 666      
623-444 0 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2006-08-19   
623-444 1 Phoenix AZ   7217 TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 666      
623-444 2 Phoenix AZ   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666   2005-04-24   
623-444 3 Phoenix AZ   7217 TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 666      
623-444 4 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2005-09-07   
623-444 5 Phoenix AZ   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666   2005-04-24   
623-444 6 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2005-09-07   

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

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