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: BRLNCA01DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
650-340 A San Mateo CA 9740 PACIFIC BELL 722      
650-342 A San Mateo CA 9740 PACIFIC BELL 722      
650-343 A San Mateo CA 9740 PACIFIC BELL 722      
650-344 A San Mateo CA 9740 PACIFIC BELL 722      
650-347 A San Mateo CA 9740 PACIFIC BELL 722      
650-348 A San Mateo CA 9740 PACIFIC BELL 722      
650-373 A San Mateo CA 9740 PACIFIC BELL 722      
650-375 A San Mateo CA 9740 PACIFIC BELL 722      
650-375 0 San Mateo CA 9740 PACIFIC BELL 722      
650-375 1 San Mateo CA 9740 PACIFIC BELL 722      
650-375 3 San Mateo CA 9740 PACIFIC BELL 722      
650-375 4 San Mateo CA 9740 PACIFIC BELL 722      
650-375 5 San Mateo CA 9740 PACIFIC BELL 722      
650-375 6 San Mateo CA 9740 PACIFIC BELL 722      
650-375 7 San Mateo CA 9740 PACIFIC BELL 722      
650-375 8 San Mateo CA 9740 PACIFIC BELL 722      
650-375 9 San Mateo CA 9740 PACIFIC BELL 722      
650-401 A San Mateo CA 9740 PACIFIC BELL 722      
650-548 A San Mateo CA 9740 PACIFIC BELL 722      
650-558 A San Mateo CA 9740 PACIFIC BELL 722      
650-579 A San Mateo CA 9740 PACIFIC BELL 722      
650-612 A San Mateo CA 9740 PACIFIC BELL 722      
650-685 A San Mateo CA 9740 PACIFIC BELL 722      
650-696 A San Mateo CA 9740 PACIFIC BELL 722      
650-696 1 San Mateo CA 9740 PACIFIC BELL 722      
650-696 2 San Mateo CA 9740 PACIFIC BELL 722      
650-696 3 San Mateo CA 9740 PACIFIC BELL 722      
650-696 4 San Mateo CA 9740 PACIFIC BELL 722      
650-696 5 San Mateo CA 9740 PACIFIC BELL 722      
650-696 6 San Mateo CA 9740 PACIFIC BELL 722      
650-696 7 San Mateo CA 9740 PACIFIC BELL 722      
650-696 8 San Mateo CA 9740 PACIFIC BELL 722      
650-696 9 San Mateo CA 9740 PACIFIC BELL 722      
650-762 A San Mateo CA 9740 PACIFIC BELL 722      
650-762 0 San Mateo CA 9740 PACIFIC BELL 722      
650-762 1 San Mateo CA 9740 PACIFIC BELL 722      
650-762 2 San Mateo CA 9740 PACIFIC BELL 722      
650-762 3 San Mateo CA 9740 PACIFIC BELL 722      
650-762 7 San Mateo CA 9740 PACIFIC BELL 722      

Last updated: Tue, 04 May 2021 15:04:27 UTC

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