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Phone Directory 307-856 Detail

State Major City Time Zone
Wyoming Casper Mountain

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Example: (307) 856-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
307-856 Riverton, WY Qwest Corporation Fremont Landline 02/04/1994

Other Series For Prefixes

307-8560###
307-8561###
307-8562###
307-8563###
307-8564###
307-8565###
307-8566###
307-8567###
307-8568###
307-8569###