Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 307 [Rate centres in NPA 307] [Dial plan for NPA 307]

NXX: 578

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-578 A Cody WY CODYWYMADS0  9636 QWEST CORPORATION 654      
307-578 0 Cody WY   9636 QWEST CORPORATION 654      
307-578 1 Cody WY   9636 QWEST CORPORATION 654      
307-578 2 Cody WY   9636 QWEST CORPORATION 654      
307-578 3 Cody WY   9636 QWEST CORPORATION 654      
307-578 4 Cody WY   9636 QWEST CORPORATION 654      
307-578 5 Cody WY   9636 QWEST CORPORATION 654      
307-578 6 Cody WY   6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654   2013-04-18   
307-578 7 Cody WY   6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654   2011-08-08   
307-578 8 Cody WY   009E BRESNAN BROADBAND OF WYOMING, LLC - WY [CHARTER] 654   2006-01-16   
307-578 9 Cody WY   879G TELEPORT COMMUNICATIONS AMERICA WY-LLC 654   2015-02-02   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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