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: 975

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
909-975 A Ontario CA ONTRCAXMDS0  2319 FRONTIER CALIFORNIA INC. 730      
909-975 0 Ontario CA   899D METROPCS NETWORKS, LLC 730   2004-04-01   
909-975 1 Ontario CA   6529 T-MOBILE USA, INC. 730   2002-12-15   
909-975 2 Ontario CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2005-12-24   
909-975 3 Ontario CA   2319 FRONTIER CALIFORNIA INC. 730      
909-975 4 Ontario CA   2319 FRONTIER CALIFORNIA INC. 730      
909-975 5 Ontario CA   2319 FRONTIER CALIFORNIA INC. 730      
909-975 6 Ontario CA   2319 FRONTIER CALIFORNIA INC. 730      
909-975 7 Ontario CA   2319 FRONTIER CALIFORNIA INC. 730      
909-975 8 Ontario CA   899D METROPCS NETWORKS, LLC 730   2004-04-01   
909-975 9 Ontario CA   899D METROPCS NETWORKS, LLC 730   2009-04-04   

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

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