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Phone Directory 307-576 Detail

State Major City Time Zone
Wyoming Casper Mountain

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
307-576 Alta, WY Columbine Telco DBA Silver Star Communications Teton Landline 01/10/1996

Other Series For Prefixes

307-5760###
307-5761###
307-5762###
307-5763###
307-5764###
307-5765###
307-5766###
307-5767###
307-5768###
307-5769###