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
623-900 3 Phoenix AZ PHNDAZ91DS5  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2015-04-21   
623-900 4 Phoenix AZ PHNDAZ91DS5  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2015-04-21   
623-900 5 Phoenix AZ PHNDAZ91DS5  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2015-04-21   
623-900 6 Phoenix AZ PHNDAZ91DS5  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2015-04-21   
623-900 7 Phoenix AZ PHNDAZ91DS5  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2015-04-21   
623-900 8 Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666   2015-04-21   
623-900 9 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2015-04-20   
623-907 A Phoenix AZ TLSNAZMADS0  9636 QWEST CORPORATION 666      
623-910 A Phoenix AZ PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
623-915 A Phoenix AZ GLDLAZMADS0  9636 QWEST CORPORATION 666      
623-920 A Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666      
623-920 0 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2021-04-02   
623-920 1 Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666   2021-04-17   
623-920 2 Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666   2021-04-17   
623-920 3 Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666   2021-04-03   
623-920 4 Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666   2021-04-03   
623-920 5 Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666   2021-04-03   
623-920 6 Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666   2021-04-03   
623-920 7 Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666   2021-04-03   
623-920 8 Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666   2021-04-03   
623-920 9 Phoenix AZ TEMPAZNR5MD  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 BOOST SUBSCRIBERCO L.L.C. 666   2026-02-02   
623-955 3 Phoenix AZ   490J BOOST SUBSCRIBERCO L.L.C. 666   2026-02-23   
623-955 4 Phoenix AZ   490J BOOST SUBSCRIBERCO L.L.C. 666   2026-03-16   
623-955 5 Phoenix AZ   907K ALLO COMMUNICATIONS LLC 666   2025-12-19   
623-955 6 Phoenix AZ   490J BOOST SUBSCRIBERCO L.L.C. 666   2026-04-06   
623-955 7 Phoenix AZ   490J BOOST SUBSCRIBERCO L.L.C. 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 PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
623-980 1 Phoenix AZ PHNXAZMAXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 666   2010-04-22   

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

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