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Phone Directory 307-823 Detail

State Major City Time Zone
Wyoming Casper Mountain

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
307-823 Cheyenne, WY Teleport Communications America - Wy - LLC Laramie Landline 08/01/2012

Other Series For Prefixes

307-8230###
307-8231###
307-8232###
307-8233###
307-8234###
307-8235###
307-8236###
307-8237###
307-8238###
307-8239###