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]

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 MDSTCA02DS0  9740 PACIFIC BELL 738      
209-579 1 Modesto CA MDSTCA02DS0  9740 PACIFIC BELL 738      
209-579 2 Modesto CA MDSTCA02DS0  9740 PACIFIC BELL 738      
209-579 3 Modesto CA SKTNCA111MD  9262 UTILITY TELECOM GROUP, LLC - CA 738      
209-579 4 Modesto CA SKTNCAGSGT0  6010 NEW CINGULAR WIRELESS PCS, LLC 738      
209-579 5 Modesto CA MDSTCA02DS0  9740 PACIFIC BELL 738      
209-579 6 Modesto CA MDSTCA02DS0  9740 PACIFIC BELL 738      
209-579 7 Modesto CA MDSTCA02DS0  9740 PACIFIC BELL 738      
209-579 8 Modesto CA MDSTCA04RS0  9740 PACIFIC BELL 738      
209-579 9 Modesto CA MDSTCA02DS0  9740 PACIFIC BELL 738      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.