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: BKFDCA12DS0

Remotes:

Switch Switch name Switch type
ARVNCA11RS0  ARVIN  5ER 
LAMTCA11RS0  LAMONT  5ER 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
661-321 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-322 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-323 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-324 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-325 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-326 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-327 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-328 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-334 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-335 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-336 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-337 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-394 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-395 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-631 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-632 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-633 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-634 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-635 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-636 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-637 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-638 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-852 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-859 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-861 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-862 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-863 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-864 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-868 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      
661-869 A Bakersfield: Main DA CA 9740 PACIFIC BELL 734      

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

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