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: 920

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-920 A Cheyenne WY CHYNWY07GMD  6529 T-MOBILE USA, INC. 654      
307-920 0 Cheyenne WY CHYNWY07GMD  6529 T-MOBILE USA, INC. 654      
307-920 1 Cheyenne WY CHYNWY07GMD  6529 T-MOBILE USA, INC. 654      
307-920 2 Cheyenne WY CHYNWY07GMD  6529 T-MOBILE USA, INC. 654   2014-08-09   
307-920 3 Cheyenne WY CHYNWY07GMD  6529 T-MOBILE USA, INC. 654   2014-08-09   
307-920 4 Cheyenne WY CHYNWY07GMD  6529 T-MOBILE USA, INC. 654   2014-11-29   
307-920 5 Cheyenne WY CHYNWY07GMD  6529 T-MOBILE USA, INC. 654   2014-11-29   
307-920 6 Cheyenne WY CHYNWY07GMD  6529 T-MOBILE USA, INC. 654   2019-07-14   
307-920 7 Cheyenne WY CHYNWY07GMD  6529 T-MOBILE USA, INC. 654   2013-12-11   
307-920 8 Cheyenne WY CHYNWY07GMD  6529 T-MOBILE USA, INC. 654   2013-12-11   
307-920 9 Cheyenne WY CHYNWY07GMD  6529 T-MOBILE USA, INC. 654   2019-07-14   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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