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
623-249 1 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2007-07-17   
623-249 2 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2007-07-18   
623-249 3 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2007-07-18   
623-249 4 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2007-07-18   
623-249 5 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2007-07-18   
623-249 6 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2007-07-18   
623-249 7 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2007-07-18   
623-249 8 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2007-07-17   
623-249 9 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2007-07-17   
623-250 A Phoenix AZ PHNXAZMAXQX  587F BANDWIDTH.COM CLEC, LLC - AZ 666      
623-250 0 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2020-04-12   
623-250 1 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2020-04-12   
623-250 2 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2020-04-12   
623-250 3 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2020-04-12   
623-250 4 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2020-04-12   
623-250 5 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2020-04-12   
623-250 6 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2020-04-12   
623-250 7 Phoenix AZ   630E ONVOY, LLC - AZ 666   2020-05-29   
623-250 8 Phoenix AZ   5562 METROPCS, INC. 666   2020-04-13   
623-250 9 Phoenix AZ   5562 METROPCS, INC. 666   2020-04-13   
623-251 A Phoenix AZ PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
623-251 0 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2007-10-27   
623-251 1 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2007-10-27   
623-251 2 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2007-10-30   
623-251 3 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2007-10-30   
623-251 4 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2007-10-30   
623-251 5 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2007-10-30   
623-251 6 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2007-10-30   
623-251 7 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2007-10-30   
623-251 8 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2007-12-06   
623-251 9 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2007-12-06   
623-252 A Phoenix AZ PHNDAZ91DS5  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666      
623-252 0 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2007-10-29   
623-252 1 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2007-10-29   
623-252 2 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2007-10-29   
623-252 3 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2007-10-29   
623-252 4 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2007-10-29   
623-252 5 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2007-10-29   
623-252 6 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2007-10-29   
623-252 7 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2008-08-10   
623-252 8 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2008-08-20   
623-252 9 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2008-06-18   
623-253 A Phoenix AZ PHNDAZ91DS5  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666      
623-253 0 Phoenix AZ   073H TELNYX LLC 666   2020-02-29   
623-253 1 Phoenix AZ   630E ONVOY, LLC - AZ 666   2020-03-02   
623-253 2 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2020-02-28   
623-253 3 Phoenix AZ   630E ONVOY, LLC - AZ 666   2020-03-02   
623-253 4 Phoenix AZ   630E ONVOY, LLC - AZ 666   2020-03-02   
623-253 5 Phoenix AZ   630E ONVOY, LLC - AZ 666   2020-03-02   
623-253 6 Phoenix AZ   630E ONVOY, LLC - AZ 666   2020-03-02   

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

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