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.

NPA: 209 [Rate centres in NPA 209] [Dial plan for NPA 209]

Region: CA

OCN: 7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
209-354 5 Merced CA SKTNCA01XNY  738   2011-03-09   
209-407 6 Tracy CA SKTNCA01XNY  738   2012-10-09   
209-426 4 Lodi CA SKTNCA01XNY  738   2015-02-10   
209-566 A Modesto CA   738      
209-566 2 Modesto CA   738   2008-09-04   
209-670 8 Stockton CA SKTNCA01XNY  738   2011-09-12   
209-809 A Modesto CA SKTNCA01XNY  738      
209-809 2 Modesto CA SKTNCA01XNY  738   2010-10-18   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.