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: SNDGCA0264Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
760-290 0 San Marcos CA 145J TERRA NOVA TELECOM INC. 732   2026-07-06   
760-298 6 Vista CA 145J TERRA NOVA TELECOM INC. 732   2026-03-13   
858-247 A La Jolla CA 145J TERRA NOVA TELECOM INC. 732      
858-729 6 La Jolla CA 145J TERRA NOVA TELECOM INC. 732   2026-03-13   
858-762 4 Poway CA 145J TERRA NOVA TELECOM INC. 732   2026-03-13   
858-768 9 La Jolla CA 145J TERRA NOVA TELECOM INC. 732   2025-02-14   

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

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