Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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Switch: CCMNCAXF98K

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
909-466 A Upland CA 2319 FRONTIER CALIFORNIA INC. 730      
909-477 A Upland CA 2319 FRONTIER CALIFORNIA INC. 730      
909-483 A Upland CA 2319 FRONTIER CALIFORNIA INC. 730      
909-941 A Upland CA 2319 FRONTIER CALIFORNIA INC. 730      
909-942 A Upland CA 2319 FRONTIER CALIFORNIA INC. 730      
909-944 A Upland CA 2319 FRONTIER CALIFORNIA INC. 730      
909-945 A Upland CA 2319 FRONTIER CALIFORNIA INC. 730      
909-948 A Upland CA 2319 FRONTIER CALIFORNIA INC. 730      
909-989 A Upland CA 2319 FRONTIER CALIFORNIA INC. 730      

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

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