Local Calling Guide

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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
623-428 3 Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666   2011-08-22   
623-428 4 Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666   2011-08-22   
623-428 5 Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666   2011-08-22   
623-428 6 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2025-01-16   
623-428 7 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2025-01-16   
623-428 8 Phoenix AZ PHNXAZMAXQX  587F BANDWIDTH.COM CLEC, LLC - AZ 666   2011-01-21   
623-428 9 Phoenix AZ PHNXAZMAXQX  587F BANDWIDTH.COM CLEC, LLC - AZ 666   2011-01-21   
623-432 A Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666      
623-432 0 Phoenix AZ PHNDAZ91DS5  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2009-11-17   
623-432 1 Phoenix AZ PHNDAZ91DS5  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2009-11-17   
623-432 2 Phoenix AZ PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2010-03-11   
623-432 3 Phoenix AZ PHNZAZZJDS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666   2010-02-08   
623-432 4 Phoenix AZ PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2010-03-20   
623-432 5 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2011-01-09   
623-432 6 Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666   2009-11-16   
623-432 7 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2011-01-09   
623-432 8 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2010-03-08   
623-432 9 Phoenix AZ PHNXAZMAXQX  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 PHNZAZZJDS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666   2005-12-12   
623-433 1 Phoenix AZ PHNZAZZJDS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666   2005-12-12   
623-433 2 Phoenix AZ PHNZAZZJDS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666   2005-12-12   
623-433 3 Phoenix AZ PHNZAZZJDS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666   2005-12-12   
623-433 4 Phoenix AZ PHNZAZZJDS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666   2005-12-12   
623-433 5 Phoenix AZ PHNZAZZJDS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666   2005-12-12   
623-433 6 Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666   2005-11-12   
623-433 7 Phoenix AZ PHNXAZMAX1Z  318J COMCAST IP PHONE, LLC 666   2005-12-05   
623-433 8 Phoenix AZ PHNXAZMAX1Z  318J COMCAST IP PHONE, LLC 666   2005-12-05   
623-433 9 Phoenix AZ PHNXAZMAX1Z  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 PHNXAZMAXQY  624H ONVOY SPECTRUM, LLC 666   2017-08-27   
623-439 1 Phoenix AZ PHNXAZMAXQX  587F BANDWIDTH.COM CLEC, LLC - AZ 666   2018-09-03   
623-439 2 Phoenix AZ PHNDAZ91DS5  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2018-08-17   
623-439 3 Phoenix AZ PHNXAZMAXQX  587F BANDWIDTH.COM CLEC, LLC - AZ 666   2018-09-03   
623-439 4 Phoenix AZ PHNXAZMAXQX  587F BANDWIDTH.COM CLEC, LLC - AZ 666   2018-09-03   
623-439 5 Phoenix AZ PHNXAZMAXQX  587F BANDWIDTH.COM CLEC, LLC - AZ 666   2018-09-03   
623-439 6 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2018-09-03   
623-439 7 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2018-09-03   
623-439 8 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2018-09-03   
623-439 9 Phoenix AZ PHNXAZ28DS3  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 PHNXAZ196MD  073H TELNYX LLC 666   2018-07-13   
623-440 1 Phoenix AZ PHNXAZMAX1Z  318J COMCAST IP PHONE, LLC 666   2018-07-09   
623-440 2 Phoenix AZ PHNXAZMAX1Z  318J COMCAST IP PHONE, LLC 666   2018-07-09   
623-440 3 Phoenix AZ PHNXAZMAX1Z  318J COMCAST IP PHONE, LLC 666   2018-07-09   
623-440 4 Phoenix AZ PHNXAZMAX1Z  318J COMCAST IP PHONE, LLC 666   2018-07-09   
623-440 5 Phoenix AZ PHNXAZMAX1Z  318J COMCAST IP PHONE, LLC 666   2018-07-09   
623-440 6 Phoenix AZ PHNXAZMAX1Z  318J COMCAST IP PHONE, LLC 666   2018-07-09   

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Last updated: Fri, 10 Jul 2026 02:55:48 UTC

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