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: NWCSWYXCRS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
307-746 A Newcastle WY 3410 RT COMMUNICATIONS 654      
307-746 0 Newcastle WY 3410 RT COMMUNICATIONS 654      
307-746 1 Newcastle WY 3410 RT COMMUNICATIONS 654      
307-746 2 Newcastle WY 3410 RT COMMUNICATIONS 654      
307-746 3 Newcastle WY 3410 RT COMMUNICATIONS 654      
307-746 4 Newcastle WY 3410 RT COMMUNICATIONS 654      
307-746 6 Newcastle WY 3410 RT COMMUNICATIONS 654      
307-746 7 Newcastle WY 3410 RT COMMUNICATIONS 654      
307-746 9 Newcastle WY 3410 RT COMMUNICATIONS 654      
605-749 A East Newcastle SD 3410 RT COMMUNICATIONS 654      

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.