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: 233

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
623-233 A Phoenix AZ PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
623-233 0 Phoenix AZ   630E ONVOY, LLC - AZ 666   2017-12-10   
623-233 1 Phoenix AZ   663G RE-INVENT TELECOM, LLC - AZ 666   2017-09-24   
623-233 2 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2016-12-22   
623-233 3 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2016-12-22   
623-233 4 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2016-12-22   
623-233 5 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2017-02-01   
623-233 6 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2017-02-01   
623-233 7 Phoenix AZ   508J CENTURYLINK COMMUNICATIONS, LLC 666   2017-02-05   
623-233 8 Phoenix AZ   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666   2017-03-03   
623-233 9 Phoenix AZ   5562 METROPCS, INC. 666   2017-06-01   

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

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