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: 755

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
623-755 A Phoenix AZ PHNXAZMAXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 666      
623-755 0 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2008-10-24   
623-755 1 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2008-10-24   
623-755 2 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2008-10-24   
623-755 3 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2009-01-17   
623-755 4 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2009-01-17   
623-755 5 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2009-03-13   
623-755 6 Phoenix AZ   630E ONVOY, LLC - AZ 666   2009-02-06   
623-755 7 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2009-03-09   
623-755 8 Phoenix AZ   630E ONVOY, LLC - AZ 666   2009-10-26   
623-755 9 Phoenix AZ   630E ONVOY, LLC - AZ 666   2009-10-26   

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

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