Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Greybull, WY

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
307-373 A CSPRWYESPS1  009E BRESNAN BROADBAND OF WYOMING, LLC - WY [CHARTER] 654      
307-373 2 CSPRWYESPS1  009E BRESNAN BROADBAND OF WYOMING, LLC - WY [CHARTER] 654   2009-08-09   
307-373 3   145J TERRA NOVA TELECOM INC. 654   2025-07-14   
307-373 6 CHYNWYMAX9X  879G TELEPORT COMMUNICATIONS AMERICA WY-LLC 654   2020-09-30   
307-765 A BASNWYXCDS1  2296 TRI-COUNTY TEL. ASSN., INC. 654      

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

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