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: 209

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
623-209 A Phoenix AZ PHNZAZ87PS0  7175 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 666      
623-209 0 Phoenix AZ   7175 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 666      
623-209 1 Phoenix AZ   7175 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 666      
623-209 2 Phoenix AZ   7175 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 666      
623-209 3 Phoenix AZ   7175 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 666      
623-209 4 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2005-10-28   
623-209 5 Phoenix AZ   7175 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 666      
623-209 6 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2017-05-24   
623-209 7 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2010-03-13   
623-209 8 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2010-03-07   
623-209 9 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2010-02-07   

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

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