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.

OCN: 394L COMCAST PHONE OF CALIFORNIA, LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
209-409 8 Modesto CA SKTNCA01XPZ  738   2007-09-26   
209-422 A Modesto CA SKTNCA01XPZ  738      
209-422 3 Modesto CA SKTNCA01XPZ  738   2015-05-04   
209-422 6 Modesto CA SKTNCA01XPZ  738   2015-12-22   
209-426 5 Lodi CA SKTNCA01XPZ  738   2015-11-18   
209-432 A Sonora: Juno DA CA SKTNCA01XPZ  738      
209-432 8 Sonora: Juno DA CA SKTNCA01XPZ  738   2011-07-29   
209-444 8 Stockton CA SKTNCA01XPZ  738      
209-451 0 Stockton CA SKTNCA01XPZ  738   2008-08-08   
209-451 1 Stockton CA SKTNCA01XPZ  738   2008-08-08   
209-451 3 Stockton CA SKTNCA01XPZ  738   2008-08-08   
209-451 4 Stockton CA SKTNCA01XPZ  738   2008-03-13   
209-455 3 Merced CA SKTNCA01XPZ  738   2018-12-17   
209-488 4 Modesto CA SKTNCA01XPZ  738   2018-10-02   
209-490 4 Stockton CA SKTNCA01XPZ  738   2016-12-06   
209-498 A San Andreas CA SKTNCA01XPZ  738      
209-498 2 San Andreas CA SKTNCA01XPZ  738   2007-07-11   
209-536 4 Sonora: Main DA CA SKTNCA01XPZ  738   2011-07-29   
209-565 5 Stockton CA SKTNCA01XPZ  738   2008-11-11   
209-566 9 Modesto CA SKTNCA01XPZ  738   2008-12-18   
209-580 A Merced CA SKTNCA01XPZ  738      
209-580 4 Merced CA SKTNCA01XPZ  738   2008-10-28   
209-594 A Stockton CA SKTNCA01XPZ  738      
209-594 0 Stockton CA SKTNCA01XPZ  738   2006-08-31   
209-594 1 Stockton CA SKTNCA01XPZ  738   2006-08-31   
209-618 4 Modesto CA SKTNCA01XPZ  738   2019-09-28   
209-622 0 Modesto CA SKTNCA01XPZ  738   2008-12-18   
209-624 3 Manteca CA SKTNCA01XPZ  738   2008-11-07   
209-625 8 Lodi CA SKTNCA01XPZ  738   2007-09-23   
209-629 8 Manteca CA SKTNCA01XPZ  738   2007-08-01   
209-635 5 Atwater CA SKTNCA01XPZ  738   2015-09-15   
209-636 4 Stockton CA SKTNCA01XPZ  738   2015-07-21   
209-647 2 Manteca CA SKTNCA01XPZ  738   2014-06-29   
209-647 4 Manteca CA SKTNCA01XPZ  738   2011-08-23   
209-650 6 Tracy CA SKTNCA01XPZ  738   2014-10-02   
209-661 4 Modesto CA SKTNCA01XPZ  738   2011-09-09   
209-665 4 Manteca CA SKTNCA01XPZ  738   2010-04-29   
209-665 7 Manteca CA SKTNCA01XPZ  738   2013-02-27   
209-666 2 Tracy CA SKTNCA01XPZ  738   2013-09-19   
209-676 2 Atwater CA SKTNCA01XPZ  738   2006-09-30   
209-677 3 Sonora: Juno DA CA SKTNCA01XPZ  738   2012-01-12   
209-680 A Plymouth CA SKTNCA01XPZ  738      
209-680 9 Plymouth CA SKTNCA01XPZ  738   2007-07-11   
209-694 3 Sonora: Main DA CA SKTNCA01XPZ  738   2014-07-15   
209-699 1 Tracy CA SKTNCA01XPZ  738   2020-10-12   
209-699 3 Tracy CA SKTNCA01XPZ  738   2020-10-12   
209-699 4 Tracy CA SKTNCA01XPZ  738   2020-10-12   
209-707 3 Manteca CA SKTNCA01XPZ  738   2016-09-30   
209-710 A Los Banos CA SKTNCA01XPZ  738      
209-710 0 Los Banos CA SKTNCA01XPZ  738   2008-10-30   

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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