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: 458

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
909-458 A Ontario CA ONTRCAXF98K  2319 FRONTIER CALIFORNIA INC. 730      
909-458 0 Ontario CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2010-10-31   
909-458 1 Ontario CA   2319 FRONTIER CALIFORNIA INC. 730      
909-458 2 Ontario CA   2319 FRONTIER CALIFORNIA INC. 730      
909-458 3 Ontario CA   2319 FRONTIER CALIFORNIA INC. 730      
909-458 4 Ontario CA   2319 FRONTIER CALIFORNIA INC. 730      
909-458 5 Ontario CA   2319 FRONTIER CALIFORNIA INC. 730      
909-458 6 Ontario CA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730   2009-08-13   
909-458 7 Ontario CA   9262 UTILITY TELECOM GROUP, LLC - CA 730      
909-458 8 Ontario CA   9262 UTILITY TELECOM GROUP, LLC - CA 730      
909-458 9 Ontario CA   2319 FRONTIER CALIFORNIA INC. 730      

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

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