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.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
510-668 0 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-668 1 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-668 2 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-668 3 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-668 4 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-668 5 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-668 6 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-668 7 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-668 8 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-683 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-683 0 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-683 2 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-683 3 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-683 4 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-683 6 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-683 7 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-683 8 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-683 9 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-687 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-770 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-770 0 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-770 1 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-770 2 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-770 3 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-770 5 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-770 8 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-770 9 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-979 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-979 0 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-979 1 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-979 3 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-979 4 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-979 5 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-979 6 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-979 7 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-979 8 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-979 9 Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      

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Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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