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]

NXX: 955

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
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   

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

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