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Phone Directory 307-840 Detail

State Major City Time Zone
Wyoming Casper Mountain

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Example: (307) 840-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
307-840 Riverton, WY Cellco Partnership DBA Verizon Wireless Fremont Cell Number 07/06/1997

Other Series For Prefixes

307-8400###
307-8401###
307-8402###
307-8403###
307-8404###
307-8405###
307-8406###
307-8407###
307-8408###
307-8409###