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: 474

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-474 A Cody WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2025-02-02   
307-474 0 Cody WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2025-02-02   
307-474 1 Cody WY   450F ONVOY, LLC - WY 654   2025-04-11   
307-474 2 Cody WY   6529 T-MOBILE USA, INC. 654   2025-06-16   
307-474 8 Cody WY   6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654   2025-04-28   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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