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: BKFDCA19DS0

Remotes:

Switch Switch name Switch type
BKFDCA15RS0  BAKERSFIELD  5ER 
FZPKCA11RS0  FRAZIER PARK  5ER 
LEBCCA11RS0  LEBEC  5ER 
LEBCCA12RS0  FRAZER PARK  5ER 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
661-654 A Bakersfield: South DA CA 9740 PACIFIC BELL 734      
661-663 A Bakersfield: South DA CA 9740 PACIFIC BELL 734      
661-664 A Bakersfield: South DA CA 9740 PACIFIC BELL 734      
661-665 A Bakersfield: South DA CA 9740 PACIFIC BELL 734      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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