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.

OCN: 193E 8X8, INC.

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
279-880 A Sacramento: Main DA CA   726   2026-07-13   
279-880 1 Sacramento: Main DA CA   726   2026-07-13   
350-880 A Manteca CA   738   2026-07-13   
350-880 1 Manteca CA   738   2026-07-13   
559-980 A Fresno CA   728   2026-07-13   
559-980 1 Fresno CA   728   2026-07-13   
661-880 A Bakersfield: Main DA CA   734   2026-07-13   
661-880 1 Bakersfield: Main DA CA   734   2026-07-13   
669-880 A San Jose: North DA CA   722   2026-07-13   
669-880 1 San Jose: North DA CA   722   2026-07-13   
738-880 A Los Angeles: DA 01 CA   730   2026-07-13   
738-880 1 Los Angeles: DA 01 CA   730   2026-07-13   
820-880 A Santa Barbara CA   740   2026-07-13   
820-880 1 Santa Barbara CA   740   2026-07-13   
831-880 A Monterey CA   736   2026-07-13   
831-880 1 Monterey CA   736   2026-07-13   
858-881 A San Diego: San Diego DA CA   732   2026-07-13   
858-881 1 San Diego: San Diego DA CA   732   2026-07-13   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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