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: FRMTCA12DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
510-226 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-249 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-252 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-353 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-354 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-360 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-413 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-438 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-440 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-445 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-490 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-492 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-498 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-623 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-624 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-651 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-656 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-657 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-659 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-661 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-668 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      
510-683 A 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      
510-979 A Fremont-Newark: Oliver DA CA 9740 PACIFIC BELL 722      

Last updated: Sat, 11 Jul 2020 20:37:26 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.