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: DSKNCAXFRS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
760-242 A Victorville: Apple Valley DA CA 4420 FRONTIER CALIFORNIA INC. 730      
760-946 A Victorville: Apple Valley DA CA 4420 FRONTIER CALIFORNIA INC. 730      
760-946 0 Victorville: Apple Valley DA CA 4420 FRONTIER CALIFORNIA INC. 730      
760-946 1 Victorville: Apple Valley DA CA 4420 FRONTIER CALIFORNIA INC. 730      
760-946 2 Victorville: Apple Valley DA CA 4420 FRONTIER CALIFORNIA INC. 730      
760-946 3 Victorville: Apple Valley DA CA 4420 FRONTIER CALIFORNIA INC. 730      
760-946 4 Victorville: Apple Valley DA CA 4420 FRONTIER CALIFORNIA INC. 730      
760-946 5 Victorville: Apple Valley DA CA 4420 FRONTIER CALIFORNIA INC. 730      
760-946 8 Victorville: Apple Valley DA CA 4420 FRONTIER CALIFORNIA INC. 730      

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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