Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: CHYNWY07GMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
307-220 A Cheyenne WY 6529 T-MOBILE USA, INC. 654      
307-920 A Cheyenne WY 6529 T-MOBILE USA, INC. 654      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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