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: HSPRCAXFDS0

Remotes:

Switch Switch name Switch type
SMVYCAXFRSA  SUMMIT VALLEY  RLU 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
760-244 A Victorville: Hesperia DA CA 4420 FRONTIER CALIFORNIA INC. 730      
760-947 A Victorville: Hesperia DA CA 4420 FRONTIER CALIFORNIA INC. 730      
760-948 A Victorville: Hesperia DA CA 4420 FRONTIER CALIFORNIA INC. 730      
760-949 A Victorville: Hesperia DA CA 4420 FRONTIER CALIFORNIA INC. 730      
760-956 A Victorville: Hesperia DA CA 4420 FRONTIER CALIFORNIA INC. 730      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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