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: 456

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
623-456 A Phoenix AZ   490J DISH WIRELESS, LLC 666   2025-06-30   
623-456 0 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2025-07-01   
623-456 1 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2025-07-01   
623-456 2 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2025-07-01   
623-456 3 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2025-07-01   
623-456 4 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2025-07-01   
623-456 5 Phoenix AZ   490J DISH WIRELESS, LLC 666   2025-06-30   
623-456 6 Phoenix AZ   490J DISH WIRELESS, LLC 666   2025-08-01   
623-456 7 Phoenix AZ   490J DISH WIRELESS, LLC 666   2025-08-29   
623-456 8 Phoenix AZ   490J DISH WIRELESS, LLC 666   2025-10-01   
623-456 9 Phoenix AZ   490J DISH WIRELESS, LLC 666   2025-10-27   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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