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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

OCN: 2319 FRONTIER CALIFORNIA INC.

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
909-933 A Ontario CA ONTRCAXPPS0  730      
909-933 1 Ontario CA ONTRCAXF98K  730      
909-933 2 Ontario CA ONTRCAXF98K  730      
909-933 3 Ontario CA ONTRCAXF98K  730      
909-933 4 Ontario CA ONTRCAXPPS0  730      
909-933 5 Ontario CA ONTRCAXF98K  730      
909-933 6 Ontario CA ONTRCAXF98K  730      
909-933 7 Ontario CA ONTRCAXF98K  730      
909-933 8 Ontario CA ONTRCAXF98K  730      
909-933 9 Ontario CA ONTRCAXF98K  730      
909-937 A Ontario CA ONTRCAXMDS0  730      
909-937 0 Ontario CA ONTRCAXMDS0  730      
909-937 1 Ontario CA ONTRCAXMDS0  730      
909-937 2 Ontario CA ONTRCAXMDS0  730      
909-937 3 Ontario CA ONTRCAXMDS0  730      
909-937 5 Ontario CA ONTRCAXMDS0  730      
909-937 6 Ontario CA ONTRCAXMDS0  730      
909-937 7 Ontario CA ONTRCAXMDS0  730      
909-937 8 Ontario CA ONTRCAXMDS0  730      
909-937 9 Ontario CA ONTRCAXMDS0  730      
909-941 A Upland CA CCMNCAXF98K  730      
909-942 A Upland CA CCMNCAXF98K  730      
909-942 8 Upland CA CCMNCAXF98K  730      
909-944 A Upland CA CCMNCAXF98K  730      
909-945 A Upland CA CCMNCAXF98K  730      
909-945 0 Upland CA CCMNCAXF98K  730      
909-945 1 Upland CA CCMNCAXF98K  730      
909-945 2 Upland CA CCMNCAXF98K  730      
909-945 3 Upland CA CCMNCAXF98K  730      
909-945 4 Upland CA CCMNCAXF98K  730      
909-945 5 Upland CA CCMNCAXF98K  730      
909-945 6 Upland CA CCMNCAXF98K  730      
909-945 9 Upland CA CCMNCAXF98K  730      
909-946 A Upland CA UPLDCAXF98G  730      
909-947 A Ontario CA ONTRCAXG94L  730      
909-948 A Upland CA CCMNCAXF98K  730      
909-949 A Upland CA UPLDCAXF98G  730      
909-971 A Claremont-San Dimas CA SNDMCAXF59C  730      
909-971 0 Claremont-San Dimas CA SNDMCAXF59C  730      
909-971 1 Claremont-San Dimas CA SNDMCAXF59C  730      
909-971 2 Claremont-San Dimas CA SNDMCAXF59C  730      
909-971 5 Claremont-San Dimas CA SNDMCAXF59C  730      
909-971 8 Claremont-San Dimas CA SNDMCAXF59C  730      
909-971 9 Claremont-San Dimas CA SNDMCAXF59C  730      
909-974 A Ontario CA ONTRCAXMDS0  730      
909-974 0 Ontario CA ONTRCAXMDS0  730      
909-974 1 Ontario CA ONTRCAXMDS0  730      
909-974 2 Ontario CA ONTRCAXMDS0  730      
909-974 3 Ontario CA ONTRCAXMDS0  730      
909-974 4 Ontario CA ONTRCAXMDS0  730      

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Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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