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.

Switch: BBCYCAXFRS3

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
909-584 A Big Bear City CA 4420 FRONTIER CALIFORNIA INC. 730      
909-584 0 Big Bear City CA 4420 FRONTIER CALIFORNIA INC. 730      
909-584 1 Big Bear City CA 4420 FRONTIER CALIFORNIA INC. 730      
909-584 2 Big Bear City CA 4420 FRONTIER CALIFORNIA INC. 730      
909-584 4 Big Bear City CA 4420 FRONTIER CALIFORNIA INC. 730      
909-584 7 Big Bear City CA 4420 FRONTIER CALIFORNIA INC. 730      
909-584 8 Big Bear City CA 4420 FRONTIER CALIFORNIA INC. 730      
909-584 9 Big Bear City CA 4420 FRONTIER CALIFORNIA INC. 730      
909-585 A Big Bear City CA 4420 FRONTIER CALIFORNIA INC. 730      

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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