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: 263

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-263 A Cheyenne WY CSPRWYDNX0X  425J CSC WIRELESS, LLC 654      
307-263 0 Cheyenne WY   450F ONVOY, LLC - WY 654   2021-07-11   
307-263 1 Cheyenne WY   9416 LEVEL 3 COMMUNICATIONS, LLC - WY 654   2020-05-29   
307-263 2 Cheyenne WY   425J CSC WIRELESS, LLC 654   2019-11-30   
307-263 3 Cheyenne WY   9416 LEVEL 3 COMMUNICATIONS, LLC - WY 654   2020-11-22   
307-263 4 Cheyenne WY   450F ONVOY, LLC - WY 654   2021-07-11   
307-263 5 Cheyenne WY   450F ONVOY, LLC - WY 654   2021-07-11   
307-263 6 Cheyenne WY   450F ONVOY, LLC - WY 654   2021-07-11   
307-263 7 Cheyenne WY   450F ONVOY, LLC - WY 654   2024-07-06   
307-263 8 Cheyenne WY   6529 T-MOBILE USA, INC. 654   2022-02-05   
307-263 9 Cheyenne WY   6529 T-MOBILE USA, INC. 654   2022-02-05   

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

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