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: SKTNCA01DS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
209-205 7 Merced CA 7421 AT&T LOCAL 738   2002-10-26   
209-210 5 Lodi CA 7421 AT&T LOCAL 738   2003-08-02   
209-290 6 Stockton CA 7421 AT&T LOCAL 738   2018-02-02   
209-371 3 Lodi CA 7421 AT&T LOCAL 738   2008-09-12   
209-371 4 Lodi CA 7421 AT&T LOCAL 738   2008-09-12   
209-371 5 Lodi CA 7421 AT&T LOCAL 738   2008-09-12   
209-513 A Stockton CA 7421 AT&T LOCAL 738      
209-513 9 Stockton CA 7421 AT&T LOCAL 738      
209-552 4 Modesto CA 7421 AT&T LOCAL 738   2002-07-23   
209-730 5 Galt CA 7421 AT&T LOCAL 738   2003-09-08   
209-829 6 Los Banos CA 7421 AT&T LOCAL 738   2006-08-14   
209-855 7 Tracy CA 7421 AT&T LOCAL 738   2009-08-17   
559-663 5 Chowchilla CA 7421 AT&T LOCAL 738   2007-08-03   

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

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