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.

Switch: SKTNCA01XPZ

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
209-217 A Jackson CA 318J COMCAST IP PHONE, LLC 738      
209-224 A Lodi CA 318J COMCAST IP PHONE, LLC 738      
209-243 A Newman CA 318J COMCAST IP PHONE, LLC 738      
209-322 A Oakdale CA 318J COMCAST IP PHONE, LLC 738      
209-349 A Merced CA 318J COMCAST IP PHONE, LLC 738      
209-408 A Modesto CA 318J COMCAST IP PHONE, LLC 738      
209-422 A Modesto CA 318J COMCAST IP PHONE, LLC 738      
209-432 A Sonora: Juno DA CA 318J COMCAST IP PHONE, LLC 738      
209-498 A San Andreas CA 318J COMCAST IP PHONE, LLC 738      
209-580 A Merced CA 318J COMCAST IP PHONE, LLC 738      
209-594 A Stockton CA 318J COMCAST IP PHONE, LLC 738      
209-680 A Plymouth CA 318J COMCAST IP PHONE, LLC 738      
209-710 A Los Banos CA 318J COMCAST IP PHONE, LLC 738      
209-792 A Stockton CA 318J COMCAST IP PHONE, LLC 738      
209-846 A Modesto CA 318J COMCAST IP PHONE, LLC 738      
209-859 A Modesto CA 318J COMCAST IP PHONE, LLC 738      
209-879 A Tracy CA 318J COMCAST IP PHONE, LLC 738      
209-920 A Valley Springs CA 318J COMCAST IP PHONE, LLC 738      
350-201 A Wallace CA 318J COMCAST IP PHONE, LLC 738      
350-205 A Planada CA 318J COMCAST IP PHONE, LLC 738      
559-775 A Chowchilla CA 318J COMCAST IP PHONE, LLC 738      

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.