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: 233

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
209-233 A Merced CA SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738      
209-233 0 Merced CA   981E BANDWIDTH.COM CLEC, LLC - CA 738   2008-11-19   
209-233 1 Merced CA   6010 NEW CINGULAR WIRELESS PCS, LLC 738   2003-06-14   
209-233 2 Merced CA   6010 NEW CINGULAR WIRELESS PCS, LLC 738   2003-06-14   
209-233 3 Merced CA   981E BANDWIDTH.COM CLEC, LLC - CA 738   2011-09-24   
209-233 4 Merced CA   6529 T-MOBILE USA, INC. 738   2006-08-06   
209-233 5 Merced CA   6529 T-MOBILE USA, INC. 738   2006-11-02   
209-233 6 Merced CA   649C ONVOY, LLC - CA 738   2009-02-10   
209-233 7 Merced CA   6529 T-MOBILE USA, INC. 738   2008-03-24   
209-233 8 Merced CA   649C ONVOY, LLC - CA 738   2009-02-10   
209-233 9 Merced CA   318J COMCAST IP PHONE, LLC 738   2006-09-30   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.