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: SKTNCA01XPZ

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
209-932 9 Stockton CA 394L COMCAST PHONE OF CALIFORNIA, LLC 738   2009-08-12   
209-940 7 Stockton CA 394L COMCAST PHONE OF CALIFORNIA, LLC 738      
209-984 9 Jamestown CA 394L COMCAST PHONE OF CALIFORNIA, LLC 738   2011-07-29   
350-201 A Wallace CA 394L COMCAST PHONE OF CALIFORNIA, LLC 738      
350-201 1 Wallace CA 394L COMCAST PHONE OF CALIFORNIA, LLC 738   2022-12-01   
350-205 A Planada CA 394L COMCAST PHONE OF CALIFORNIA, LLC 738      
350-205 1 Planada CA 394L COMCAST PHONE OF CALIFORNIA, LLC 738   2023-03-11   
350-210 7 Tuolumne CA 394L COMCAST PHONE OF CALIFORNIA, LLC 738   2024-04-22   
350-333 2 Newman CA 394L COMCAST PHONE OF CALIFORNIA, LLC 738   2024-04-22   
350-999 7 Gustine CA 394L COMCAST PHONE OF CALIFORNIA, LLC 738   2022-12-05   
559-201 9 Chowchilla CA 394L COMCAST PHONE OF CALIFORNIA, LLC 738   2006-09-30   
559-775 A Chowchilla CA 394L COMCAST PHONE OF CALIFORNIA, LLC 738      
559-775 3 Chowchilla CA 394L COMCAST PHONE OF CALIFORNIA, LLC 738   2015-08-23   

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Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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