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: 888

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
623-888 A Phoenix AZ PHNXAZ19DS3  579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 666      
623-888 0 Phoenix AZ   5562 METROPCS, INC. 666   2013-02-08   
623-888 1 Phoenix AZ   5562 METROPCS, INC. 666   2013-02-08   
623-888 2 Phoenix AZ   5562 METROPCS, INC. 666   2013-02-08   
623-888 3 Phoenix AZ   829J PAETEC ITEL, LLC 666   2013-11-04   
623-888 4 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2014-03-02   
623-888 5 Phoenix AZ   829J PAETEC ITEL, LLC 666   2012-10-11   
623-888 6 Phoenix AZ   579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 666   2012-08-16   
623-888 7 Phoenix AZ   9636 QWEST CORPORATION 666   2012-10-01   
623-888 8 Phoenix AZ   579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 666   2012-07-14   
623-888 9 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2014-02-22   

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

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