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.

Dubois, WY

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
307-239 A RCSPWY08AMD  340D GOLD STAR COMMUNICATIONS, LLC 654      
307-239 0 RCSPWY08AMD  340D GOLD STAR COMMUNICATIONS, LLC 654      
307-239 8 CSPRWYMAXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 654      
307-239 9 CSPRWYMAXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 654      
307-450 A CHYNWYVACM1  013B UNION TELEPHONE COMPANY 654      
307-455 A DUBSWYXCRS0  2291 DUBOIS TEL. EXCH., INC. 654      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.