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: SNDGCA0266Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
442-532 A El Centro CA 516J TON80 COMMUNICATIONS, LLC 732      
442-568 A Encinitas CA 516J TON80 COMMUNICATIONS, LLC 732      
442-646 A Brawley CA 516J TON80 COMMUNICATIONS, LLC 732      
858-462 A National City CA 516J TON80 COMMUNICATIONS, LLC 732      
858-463 A Chula Vista CA 516J TON80 COMMUNICATIONS, LLC 732      
858-665 A La Jolla CA 516J TON80 COMMUNICATIONS, LLC 732      
858-687 A Poway CA 516J TON80 COMMUNICATIONS, LLC 732      
858-727 A San Diego: San Diego DA CA 516J TON80 COMMUNICATIONS, LLC 732      
858-742 A San Diego: Linda Vista DA CA 516J TON80 COMMUNICATIONS, LLC 732      
858-787 A Pine Valley CA 516J TON80 COMMUNICATIONS, LLC 732      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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