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.
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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   2023-08-25   
307-301 9 Casper WY 6529 T-MOBILE USA, INC. 654   2023-12-04   
307-306 7 Douglas WY 6529 T-MOBILE USA, INC. 654   2022-03-31   
307-381 8 Sheridan WY 6529 T-MOBILE USA, INC. 654   2022-03-31   
307-381 9 Sheridan WY 6529 T-MOBILE USA, INC. 654   2022-03-31   
307-394 A Casper WY 6529 T-MOBILE USA, INC. 654      
307-394 9 Casper WY 6529 T-MOBILE USA, INC. 654   2021-07-23   
307-410 A Powell WY 6529 T-MOBILE USA, INC. 654      
307-410 9 Powell WY 6529 T-MOBILE USA, INC. 654   2022-05-22   
307-419 A Cody WY 6529 T-MOBILE USA, INC. 654      
307-419 9 Cody WY 6529 T-MOBILE USA, INC. 654   2022-05-26   
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   2024-02-03   
307-441 7 Casper WY 6529 T-MOBILE USA, INC. 654   2022-03-21   
307-441 8 Casper WY 6529 T-MOBILE USA, INC. 654   2022-03-21   
307-533 4 Sheridan WY 6529 T-MOBILE USA, INC. 654   2023-09-13   
307-533 6 Sheridan WY 6529 T-MOBILE USA, INC. 654   2023-12-26   
307-533 7 Sheridan WY 6529 T-MOBILE USA, INC. 654   2023-12-26   
307-556 9 Riverton WY 6529 T-MOBILE USA, INC. 654   2022-03-31   
307-855 9 Riverton WY 6529 T-MOBILE USA, INC. 654   2022-12-19   

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

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