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: TBRNCA11DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
415-435 A Belvedere CA 9740 PACIFIC BELL 722      
415-789 A Belvedere CA 9740 PACIFIC BELL 722      
415-789 0 Belvedere CA 9740 PACIFIC BELL 722      
415-789 1 Belvedere CA 9740 PACIFIC BELL 722      
415-789 2 Belvedere CA 9740 PACIFIC BELL 722      
415-789 5 Belvedere CA 9740 PACIFIC BELL 722      
415-789 7 Belvedere CA 9740 PACIFIC BELL 722      
415-789 8 Belvedere CA 9740 PACIFIC BELL 722      
415-789 9 Belvedere CA 9740 PACIFIC BELL 722      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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