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: CSPRWYMAXEX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
307-243 9 Casper WY 6529 T-MOBILE USA, INC. 654      
307-301 9 Casper WY 6529 T-MOBILE USA, INC. 654      
307-306 7 Douglas WY 6529 T-MOBILE USA, INC. 654      
307-381 8 Sheridan WY 6529 T-MOBILE USA, INC. 654      
307-381 9 Sheridan WY 6529 T-MOBILE USA, INC. 654      
307-394 A Casper WY 6529 T-MOBILE USA, INC. 654      
307-394 9 Casper WY 6529 T-MOBILE USA, INC. 654      
307-410 A Powell WY 6529 T-MOBILE USA, INC. 654      
307-410 9 Powell WY 6529 T-MOBILE USA, INC. 654      
307-419 A Cody WY 6529 T-MOBILE USA, INC. 654      
307-419 9 Cody WY 6529 T-MOBILE USA, INC. 654      
307-428 A Douglas WY 6529 T-MOBILE USA, INC. 654   2024-02-03   
307-428 9 Douglas WY 6529 T-MOBILE USA, INC. 654      
307-441 7 Casper WY 6529 T-MOBILE USA, INC. 654      
307-441 8 Casper WY 6529 T-MOBILE USA, INC. 654      
307-533 4 Sheridan WY 6529 T-MOBILE USA, INC. 654      
307-533 6 Sheridan WY 6529 T-MOBILE USA, INC. 654      
307-533 7 Sheridan WY 6529 T-MOBILE USA, INC. 654      
307-556 9 Riverton WY 6529 T-MOBILE USA, INC. 654      
307-855 9 Riverton WY 6529 T-MOBILE USA, INC. 654      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.