Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 909 [Rate centres in NPA 909] [Dial plan for NPA 909]

NXX: 230

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
909-230 A Ontario CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
909-230 0 Ontario CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2004-03-07   
909-230 1 Ontario CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2005-07-13   
909-230 2 Ontario CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2004-03-07   
909-230 3 Ontario CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2004-03-07   
909-230 4 Ontario CA   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
909-230 5 Ontario CA   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
909-230 6 Ontario CA   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
909-230 7 Ontario CA   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
909-230 8 Ontario CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2003-11-24   
909-230 9 Ontario CA   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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