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: 579

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
909-579 A Upland CA UPLDCAXF98G  2319 FRONTIER CALIFORNIA INC. 730      
909-579 0 Upland CA   2319 FRONTIER CALIFORNIA INC. 730      
909-579 1 Upland CA   2319 FRONTIER CALIFORNIA INC. 730      
909-579 2 Upland CA   981E BANDWIDTH.COM CLEC, LLC - CA 730   2011-06-03   
909-579 3 Upland CA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730   2003-05-05   
909-579 4 Upland CA   2319 FRONTIER CALIFORNIA INC. 730      
909-579 5 Upland CA   2319 FRONTIER CALIFORNIA INC. 730      
909-579 6 Upland CA   2319 FRONTIER CALIFORNIA INC. 730      
909-579 7 Upland CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2004-09-05   
909-579 8 Upland CA   2319 FRONTIER CALIFORNIA INC. 730      
909-579 9 Upland CA   6529 T-MOBILE USA, INC. 730   2005-08-12   

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

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