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: BKFDCAKTX5X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
661-276 0 Edwards CA 145J TERRA NOVA TELECOM INC. 734   2024-05-10   
661-278 2 Edwards CA 145J TERRA NOVA TELECOM INC. 734   2024-11-12   
661-407 A Bakersfield: Main DA CA 145J TERRA NOVA TELECOM INC. 734      
661-457 A Lost Hills CA 145J TERRA NOVA TELECOM INC. 734      
661-457 2 Lost Hills CA 145J TERRA NOVA TELECOM INC. 734   2024-05-10   
661-731 7 Earlimart CA 145J TERRA NOVA TELECOM INC. 734   2024-09-14   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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