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: 426

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-426 A Cheyenne WY   792K CHARTER IP ENABLED SERVICES, LLC 654      
307-426 0 Cheyenne WY CHYNWYMAXIX  6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654   2024-12-02   
307-426 1 Cheyenne WY   081F BANDWIDTH.COM CLEC, LLC - WY 654   2026-02-15   
307-426 4 Cheyenne WY   792K CHARTER IP ENABLED SERVICES, LLC 654   2007-07-16   
307-426 5 Cheyenne WY   792K CHARTER IP ENABLED SERVICES, LLC 654   2010-02-18   
307-426 6 Cheyenne WY   6529 T-MOBILE USA, INC. 654   2025-09-14   
307-426 7 Cheyenne WY   6529 T-MOBILE USA, INC. 654   2025-09-14   
307-426 8 Cheyenne WY   6529 T-MOBILE USA, INC. 654   2025-09-14   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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