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: SNDGCA02XOZ

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
442-385 A San Marcos CA 7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732      
619-329 A San Diego: San Diego DA CA 7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732      
760-618 A Calexico CA 7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732      
760-906 A Ramona CA 7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732      
858-383 A San Diego: San Diego DA CA 7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732      
858-390 A La Jolla CA 7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732      
858-765 A La Jolla CA 7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732      
858-978 A La Jolla CA 7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732      
858-979 A La Jolla CA 7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732      
858-980 A La Jolla CA 7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732      
858-981 A La Jolla CA 7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732      
858-982 A La Jolla CA 7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732      
858-983 A La Jolla CA 7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732      
858-984 A La Jolla CA 7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732      
858-985 A La Jolla CA 7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732      
858-986 A La Jolla CA 7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732      
858-989 A La Jolla CA 7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732      

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

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