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: BASNWYXCDS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
307-224 5 Casper WY 7466 TRI TEL, INC. 654   2010-02-19   
307-359 4 Douglas WY 7466 TRI TEL, INC. 654   2010-02-19   
307-366 A Ten Sleep WY 2296 TRI-COUNTY TEL. ASSN., INC. 654      
307-469 A Hyattville WY 2296 TRI-COUNTY TEL. ASSN., INC. 654      
307-548 A Lovell WY 2296 TRI-COUNTY TEL. ASSN., INC. 654      
307-568 A Basin WY 2296 TRI-COUNTY TEL. ASSN., INC. 654      
307-586 A Cody WY 7466 TRI TEL, INC. 654      
307-620 4 Buffalo WY 7466 TRI TEL, INC. 654   2010-02-19   
307-655 4 Sheridan WY 7466 TRI TEL, INC. 654   2010-02-19   
307-664 A Frannie WY 2296 TRI-COUNTY TEL. ASSN., INC. 654      
307-696 8 Gillette WY 7466 TRI TEL, INC. 654   2010-02-19   
307-762 A Burlington WY 2296 TRI-COUNTY TEL. ASSN., INC. 654      
307-764 A Powell WY 7466 TRI TEL, INC. 654      
307-765 A Greybull WY 2296 TRI-COUNTY TEL. ASSN., INC. 654      
307-867 A Hamilton Dome WY 2296 TRI-COUNTY TEL. ASSN., INC. 654      
307-868 A Meeteetse WY 2296 TRI-COUNTY TEL. ASSN., INC. 654      
406-484 A Crooked Creek MT 2296 TRI-COUNTY TEL. ASSN., INC. 654      
406-484 0 Crooked Creek MT 2296 TRI-COUNTY TEL. ASSN., INC. 654      
406-484 2 Crooked Creek MT 2296 TRI-COUNTY TEL. ASSN., INC. 654      
406-484 6 Crooked Creek MT 2296 TRI-COUNTY TEL. ASSN., INC. 654      
406-484 9 Crooked Creek MT 2296 TRI-COUNTY TEL. ASSN., INC. 654      
406-764 A North Frannie MT 2296 TRI-COUNTY TEL. ASSN., INC. 654      
406-764 0 North Frannie MT 2296 TRI-COUNTY TEL. ASSN., INC. 654      
406-764 2 North Frannie MT 2296 TRI-COUNTY TEL. ASSN., INC. 654      
406-764 9 North Frannie MT 2296 TRI-COUNTY TEL. ASSN., INC. 654      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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