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: BKFDCA11XJX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
661-605 A Bakersfield: Main DA CA 394L COMCAST PHONE OF CALIFORNIA, LLC 734      
661-605 1 Bakersfield: Main DA CA 394L COMCAST PHONE OF CALIFORNIA, LLC 734   2023-06-13   
661-668 3 Earlimart CA 394L COMCAST PHONE OF CALIFORNIA, LLC 734   2025-03-08   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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