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: RCSPWY08AMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
307-229 A Cokeville WY 340D GOLD STAR COMMUNICATIONS, LLC 654      
307-231 8 Pinedale WY 340D GOLD STAR COMMUNICATIONS, LLC 654   2014-09-12   
307-239 A Dubois WY 340D GOLD STAR COMMUNICATIONS, LLC 654      
307-656 A Alpine WY 340D GOLD STAR COMMUNICATIONS, LLC 654      
307-774 A Jackson WY 340D GOLD STAR COMMUNICATIONS, LLC 654      
307-828 8 Kemmerer WY 340D GOLD STAR COMMUNICATIONS, LLC 654   2012-07-06   
307-880 A Freedom WY 340D GOLD STAR COMMUNICATIONS, LLC 654      
307-887 A Afton WY 340D GOLD STAR COMMUNICATIONS, LLC 654      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.