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: BKFDCA01WMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
661-368 A Bakersfield: North DA CA 7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 734      
661-385 A Edwards CA 7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 734      
661-446 A Delano CA 7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 734      
661-565 A Bakersfield: Main DA CA 7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 734      
661-610 A Bakersfield: Main DA CA 7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 734      
661-642 A Delano CA 7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 734   2024-01-19   
661-679 A Bakersfield: North DA CA 7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 734      
661-912 A Bakersfield: Main DA CA 7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 734      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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