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: 454

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-454 A Riverton WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2024-07-29   
307-454 0 Riverton WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2024-07-29   
307-454 1 Riverton WY CSPRWYMAXEX  6529 T-MOBILE USA, INC. 654   2024-10-09   
307-454 2 Riverton WY   6529 T-MOBILE USA, INC. 654   2025-05-18   
307-454 3 Riverton WY   6529 T-MOBILE USA, INC. 654   2025-06-29   

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

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