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Phone Directory 307-256 Detail

State Major City Time Zone
Wyoming Casper Mountain

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
307-256 Cheyenne, WY Sprint Spectrum L.p. Laramie Cell Number 01/05/2004

Other Series For Prefixes

307-2560###
307-2561###
307-2562###
307-2563###
307-2564###
307-2565###
307-2566###
307-2567###
307-2568###
307-2569###