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: BKFDCAKTX7X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
661-518 8 Tehachapi CA 516J TON80 COMMUNICATIONS, LLC 734   2021-10-09   
661-624 5 Bakersfield: South DA CA 516J TON80 COMMUNICATIONS, LLC 734   2021-11-09   
661-732 7 Delano CA 516J TON80 COMMUNICATIONS, LLC 734   2021-09-08   
661-933 2 Bakersfield: North DA CA 516J TON80 COMMUNICATIONS, LLC 734   2021-10-07   
661-934 A Arvin CA 516J TON80 COMMUNICATIONS, LLC 734      
661-934 6 Arvin CA 516J TON80 COMMUNICATIONS, LLC 734   2021-06-08   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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