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: SNLOCA01XMY

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
805-800 1 Lompoc CA 490J DISH WIRELESS, LLC 740   2023-06-26   
805-951 3 Santa Barbara CA 490J DISH WIRELESS, LLC 740   2023-11-21   
820-216 A Arroyo Grande CA 490J DISH WIRELESS, LLC 740      
820-216 9 Arroyo Grande CA 490J DISH WIRELESS, LLC 740   2023-07-17   
820-217 A Atascadero CA 490J DISH WIRELESS, LLC 740      
820-217 0 Atascadero CA 490J DISH WIRELESS, LLC 740   2023-08-10   
820-946 1 Santa Maria CA 490J DISH WIRELESS, LLC 740   2023-11-13   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.