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.

Winterhaven, CA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
442-391 A PHNXAZ19DMD  490J DISH WIRELESS, LLC 666      
442-391 0 PHNXAZ19DMD  490J DISH WIRELESS, LLC 666   2022-09-29   
760-572 A WNHNCAXFPS0  2323 WINTERHAVEN TEL. CO. 666      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.