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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OCN: 2296 TRI - COUNTY TELEPHONE ASSOCIATION, INC.

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
307-366 A Ten Sleep WY BASNWYXCDS1  654      
307-469 A Hyattville WY BASNWYXCDS1  654      
307-548 A Lovell WY BASNWYXCDS1  654      
307-568 A Basin WY BASNWYXCDS1  654      
307-664 A Frannie WY BASNWYXCDS1  654      
307-762 A Burlington WY BASNWYXCDS1  654      
307-765 A Greybull WY BASNWYXCDS1  654      
307-867 A Hamilton Dome WY BASNWYXCDS1  654      
307-868 A Meeteetse WY BASNWYXCDS1  654      
406-484 A Crooked Creek MT BASNWYXCDS1  654      
406-484 0 Crooked Creek MT BASNWYXCDS1  654      
406-484 2 Crooked Creek MT BASNWYXCDS1  654      
406-484 6 Crooked Creek MT BASNWYXCDS1  654      
406-484 9 Crooked Creek MT BASNWYXCDS1  654      
406-764 A North Frannie MT BASNWYXCDS1  654      
406-764 0 North Frannie MT BASNWYXCDS1  654      
406-764 2 North Frannie MT BASNWYXCDS1  654      
406-764 9 North Frannie MT BASNWYXCDS1  654      

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

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