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: 534

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
209-534 A Modesto CA SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738      
209-534 0 Modesto CA   6529 T-MOBILE USA, INC. 738   2004-06-18   
209-534 1 Modesto CA   6529 T-MOBILE USA, INC. 738      
209-534 2 Modesto CA   5562 METROPCS, INC. 738   2004-11-11   
209-534 3 Modesto CA   6010 NEW CINGULAR WIRELESS PCS, LLC 738   2005-09-19   
209-534 4 Modesto CA   6529 T-MOBILE USA, INC. 738      
209-534 5 Modesto CA   6529 T-MOBILE USA, INC. 738      
209-534 6 Modesto CA   6529 T-MOBILE USA, INC. 738      
209-534 7 Modesto CA   6529 T-MOBILE USA, INC. 738      
209-534 8 Modesto CA   5562 METROPCS, INC. 738      
209-534 9 Modesto CA   5562 METROPCS, INC. 738      

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.