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
623-552 A Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666      
623-552 0 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2008-12-07   
623-552 1 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2008-12-07   
623-552 2 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2008-11-15   
623-552 3 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2008-11-15   
623-552 4 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2008-11-15   
623-552 5 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2008-11-15   
623-552 6 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2008-11-15   
623-552 7 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2008-11-15   
623-552 8 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2008-09-12   
623-552 9 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2008-09-12   
623-556 A Phoenix AZ BRDSAZMADS0  9636 QWEST CORPORATION 666      
623-556 0 Phoenix AZ   9636 QWEST CORPORATION 666      
623-556 1 Phoenix AZ   9636 QWEST CORPORATION 666      
623-556 2 Phoenix AZ   9636 QWEST CORPORATION 666      
623-556 3 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2005-01-17   
623-556 4 Phoenix AZ   9636 QWEST CORPORATION 666      
623-556 5 Phoenix AZ   9636 QWEST CORPORATION 666      
623-556 6 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2004-03-06   
623-556 7 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2004-03-06   
623-556 8 Phoenix AZ   9636 QWEST CORPORATION 666      
623-556 9 Phoenix AZ   9636 QWEST CORPORATION 666      
623-561 A Phoenix AZ AGFIAZSRDS0  9636 QWEST CORPORATION 666      
623-562 A Phoenix AZ PHNXAZMAX1Z  318J COMCAST IP PHONE, LLC 666      
623-562 0 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2017-11-23   
623-562 1 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2017-11-23   
623-562 2 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2017-11-23   
623-562 3 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2017-11-23   
623-562 4 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2017-08-19   
623-562 5 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2017-11-23   
623-562 6 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2017-11-21   
623-562 7 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2017-11-21   
623-562 8 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2019-03-06   
623-562 9 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2019-03-06   
623-565 A Phoenix AZ PHNZAZ87PS0  7175 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 666      
623-565 0 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2007-08-13   
623-565 1 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2007-08-13   
623-565 2 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2007-08-13   
623-565 3 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2007-08-13   
623-565 4 Phoenix AZ   5562 METROPCS, INC. 666   2007-09-27   
623-565 5 Phoenix AZ   7175 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 666   2007-08-11   
623-565 6 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2007-09-06   
623-565 7 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2007-09-06   
623-565 8 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2008-07-02   
623-565 9 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2007-09-25   
623-566 A Phoenix AZ AGFIAZSRDS0  9636 QWEST CORPORATION 666      
623-570 A Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666      
623-572 A Phoenix AZ AGFIAZSRDS0  9636 QWEST CORPORATION 666      
623-580 A Phoenix AZ DRVYAZNODS0  9636 QWEST CORPORATION 666      
623-581 A Phoenix AZ DRVYAZNODS0  9636 QWEST CORPORATION 666      

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

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