Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 209 [Rate centres in NPA 209] [Dial plan for NPA 209]

NXX: 579

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
209-579 A Modesto CA MDSTCA02DS0  9740 PACIFIC BELL 738      
209-579 0 Modesto CA   9740 PACIFIC BELL 738      
209-579 1 Modesto CA   9740 PACIFIC BELL 738      
209-579 2 Modesto CA   9740 PACIFIC BELL 738      
209-579 3 Modesto CA   9262 UTILITY TELECOM GROUP, LLC - CA 738   2004-11-28   
209-579 4 Modesto CA   6010 NEW CINGULAR WIRELESS PCS, LLC 738   2006-01-26   
209-579 5 Modesto CA   9740 PACIFIC BELL 738      
209-579 6 Modesto CA   9740 PACIFIC BELL 738      
209-579 7 Modesto CA   9740 PACIFIC BELL 738      
209-579 8 Modesto CA   9740 PACIFIC BELL 738      
209-579 9 Modesto CA   9740 PACIFIC BELL 738      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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