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: MDSTCA04RS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
209-543 A Modesto CA 9740 PACIFIC BELL 738      
209-543 0 Modesto CA 9740 PACIFIC BELL 738      
209-543 1 Modesto CA 9740 PACIFIC BELL 738      
209-543 3 Modesto CA 9740 PACIFIC BELL 738      
209-543 6 Modesto CA 9740 PACIFIC BELL 738      
209-543 7 Modesto CA 9740 PACIFIC BELL 738      
209-543 8 Modesto CA 9740 PACIFIC BELL 738      
209-543 9 Modesto CA 9740 PACIFIC BELL 738      
209-545 A Modesto CA 9740 PACIFIC BELL 738      
209-579 8 Modesto CA 9740 PACIFIC BELL 738      
209-735 A Modesto CA 9740 PACIFIC BELL 738      
209-735 3 Modesto CA 9740 PACIFIC BELL 738   2005-12-22   
209-735 4 Modesto CA 9740 PACIFIC BELL 738   2005-12-22   
209-735 5 Modesto CA 9740 PACIFIC BELL 738   2005-12-22   
209-735 6 Modesto CA 9740 PACIFIC BELL 738   2005-12-22   
209-735 7 Modesto CA 9740 PACIFIC BELL 738   2005-12-22   

Last updated: Thu, 04 Aug 2022 23:14:42 UTC

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