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: SNBRCAXH88K

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
909-475 A Marshall CA 2319 FRONTIER CALIFORNIA INC. 730      
909-475 1 Marshall CA 2319 FRONTIER CALIFORNIA INC. 730      
909-475 2 Marshall CA 2319 FRONTIER CALIFORNIA INC. 730      
909-475 5 Marshall CA 2319 FRONTIER CALIFORNIA INC. 730      
909-475 8 Marshall CA 2319 FRONTIER CALIFORNIA INC. 730      
909-475 9 Marshall CA 2319 FRONTIER CALIFORNIA INC. 730      
909-881 A Marshall CA 2319 FRONTIER CALIFORNIA INC. 730      
909-882 A Marshall CA 2319 FRONTIER CALIFORNIA INC. 730      
909-883 A Marshall CA 2319 FRONTIER CALIFORNIA INC. 730      
909-886 A Marshall CA 2319 FRONTIER CALIFORNIA INC. 730      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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