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: SKTNCA01X6Y

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
209-213 A Sonora: Main DA CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 738      
209-222 A Modesto CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 738      
209-230 A Merced CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 738      
209-266 A Coulterville CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 738      
209-283 A Jackson CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 738      
209-284 A Modesto CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 738      
209-315 A Riverbank CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 738      
209-437 A Le Grand CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 738      
209-442 A Waterford: Main DA CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 738      
209-568 A Modesto CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 738      
209-624 A Manteca CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 738      
209-650 A Tracy CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 738      
209-695 A Patterson CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 738      
209-707 A Manteca CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 738      
209-713 A Pinecrest CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 738      
209-751 A Stockton CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 738      
209-757 A Farmington CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 738      
209-780 A Gustine CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 738      
209-790 A Ione CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 738      
209-916 A Jamestown CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 738      
209-924 A Ripon CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 738      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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