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
623-518 3 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2005-10-28   
623-518 4 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2005-10-28   
623-518 5 Phoenix AZ   5562 METROPCS, INC. 666   2005-01-08   
623-518 6 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2005-10-28   
623-518 7 Phoenix AZ   5562 METROPCS, INC. 666   2005-01-08   
623-518 8 Phoenix AZ   5562 METROPCS, INC. 666   2005-01-08   
623-518 9 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2005-10-28   
623-521 A Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666      
623-521 0 Phoenix AZ   6529 T-MOBILE USA, INC. 666      
623-521 1 Phoenix AZ   6529 T-MOBILE USA, INC. 666      
623-521 2 Phoenix AZ   6529 T-MOBILE USA, INC. 666      
623-521 3 Phoenix AZ   6529 T-MOBILE USA, INC. 666      
623-521 4 Phoenix AZ   6529 T-MOBILE USA, INC. 666      
623-521 5 Phoenix AZ   6529 T-MOBILE USA, INC. 666      
623-521 6 Phoenix AZ   6529 T-MOBILE USA, INC. 666      
623-521 7 Phoenix AZ   6529 T-MOBILE USA, INC. 666      
623-521 8 Phoenix AZ   6529 T-MOBILE USA, INC. 666      
623-521 9 Phoenix AZ   6529 T-MOBILE USA, INC. 666      
623-522 A Phoenix AZ TEMPAZNR5MD  5562 METROPCS, INC. 666      
623-522 0 Phoenix AZ   5562 METROPCS, INC. 666   2015-07-27   
623-522 1 Phoenix AZ   5562 METROPCS, INC. 666   2015-08-31   
623-522 2 Phoenix AZ   5562 METROPCS, INC. 666   2015-07-27   
623-522 3 Phoenix AZ   5562 METROPCS, INC. 666   2015-08-31   
623-522 4 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2015-09-10   
623-522 5 Phoenix AZ   829J PAETEC ITEL, LLC 666   2015-08-17   
623-522 6 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2015-11-18   
623-522 7 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2015-11-30   
623-522 8 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2015-09-10   
623-522 9 Phoenix AZ   5562 METROPCS, INC. 666   2015-07-27   
623-523 A Phoenix AZ PHNXAZMRDS0  9636 QWEST CORPORATION 666      
623-523 0 Phoenix AZ   9636 QWEST CORPORATION 666      
623-523 1 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2003-06-21   
623-523 2 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2003-06-21   
623-523 3 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2003-09-30   
623-523 4 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2003-09-30   
623-523 5 Phoenix AZ   9636 QWEST CORPORATION 666      
623-523 6 Phoenix AZ   9636 QWEST CORPORATION 666      
623-523 7 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2003-09-30   
623-523 8 Phoenix AZ   9636 QWEST CORPORATION 666      
623-523 9 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2003-09-30   
623-524 A Phoenix AZ BRDSAZMADS0  9636 QWEST CORPORATION 666      
623-524 0 Phoenix AZ   9636 QWEST CORPORATION 666   2010-08-27   
623-524 1 Phoenix AZ   9636 QWEST CORPORATION 666   2010-08-27   
623-524 2 Phoenix AZ   9636 QWEST CORPORATION 666   2010-08-27   
623-524 3 Phoenix AZ   9636 QWEST CORPORATION 666   2010-08-27   
623-524 4 Phoenix AZ   9636 QWEST CORPORATION 666   2010-08-27   
623-524 5 Phoenix AZ   9636 QWEST CORPORATION 666   2010-08-27   
623-524 6 Phoenix AZ   9636 QWEST CORPORATION 666   2010-08-27   
623-524 7 Phoenix AZ   9636 QWEST CORPORATION 666   2010-08-27   
623-524 8 Phoenix AZ   9636 QWEST CORPORATION 666   2010-08-27   

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

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