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
623-920 1 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2021-04-17   
623-920 2 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2021-04-17   
623-920 3 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2021-04-03   
623-920 4 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2021-04-03   
623-920 5 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2021-04-03   
623-920 6 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2021-04-03   
623-920 7 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2021-04-03   
623-920 8 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2021-04-03   
623-920 9 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2021-04-03   
623-925 A Phoenix AZ GDYRAZCWDS0  9636 QWEST CORPORATION 666      
623-930 A Phoenix AZ GLDLAZMADS0  9636 QWEST CORPORATION 666      
623-931 A Phoenix AZ GLDLAZMADS0  9636 QWEST CORPORATION 666      
623-932 A Phoenix AZ GDYRAZCWDS0  9636 QWEST CORPORATION 666      
623-933 A Phoenix AZ PHNXAZMRDS0  9636 QWEST CORPORATION 666      
623-934 A Phoenix AZ GLDLAZMADS0  9636 QWEST CORPORATION 666      
623-935 A Phoenix AZ LTPKAZMADS0  9636 QWEST CORPORATION 666      
623-936 A Phoenix AZ TLSNAZMADS0  9636 QWEST CORPORATION 666      
623-937 A Phoenix AZ GLDLAZMADS0  9636 QWEST CORPORATION 666      
623-939 A Phoenix AZ GLDLAZMADS0  9636 QWEST CORPORATION 666      
623-955 A Phoenix AZ   907K ALLO COMMUNICATIONS LLC 666   2025-12-19   
623-955 0 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2025-12-22   
623-955 1 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2025-12-22   
623-955 2 Phoenix AZ   490J DISH WIRELESS, LLC 666   2026-02-02   
623-955 3 Phoenix AZ   490J DISH WIRELESS, LLC 666   2026-02-23   
623-955 4 Phoenix AZ   490J DISH WIRELESS, LLC 666   2026-03-16   
623-955 5 Phoenix AZ   907K ALLO COMMUNICATIONS LLC 666   2025-12-19   
623-955 6 Phoenix AZ   490J DISH WIRELESS, LLC 666   2026-04-06   
623-955 7 Phoenix AZ   490J DISH WIRELESS, LLC 666   2026-04-27   
623-955 8 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2025-12-22   
623-955 9 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2025-12-22   
623-972 A Phoenix AZ PHNXAZMRDS0  9636 QWEST CORPORATION 666      
623-974 A Phoenix AZ PHNXAZMRDS0  9636 QWEST CORPORATION 666      
623-975 A Phoenix AZ BRDSAZMADS0  9636 QWEST CORPORATION 666      
623-977 A Phoenix AZ PHNXAZMRDS0  9636 QWEST CORPORATION 666      
623-979 A Phoenix AZ PHNXAZPRDS0  9636 QWEST CORPORATION 666      
623-980 A Phoenix AZ PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
623-980 0 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
623-980 1 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2010-04-22   
623-980 2 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
623-980 3 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2010-05-02   
623-980 4 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
623-980 5 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
623-980 6 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
623-980 7 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2010-04-22   
623-980 8 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
623-980 9 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
623-986 A Phoenix AZ PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
623-986 0 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2006-12-29   
623-986 1 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2006-12-29   
623-986 2 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2007-04-05   

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

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