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Phone Directory 307-777 Detail

State Major City Time Zone
Wyoming Casper Mountain

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
307-777 Cheyenne, WY Qwest Corporation Laramie Landline 02/04/1994

Other Series For Prefixes

307-7770###
307-7771###
307-7772###
307-7773###
307-7774###
307-7775###
307-7776###
307-7777###
307-7778###
307-7779###