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Phone Directory 435-257 Detail

State Major City Time Zone
Utah Park City Mountain

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
435-257 Tremonton, UT Citizens Telecom-utah DBA Frontier Comm Of Ut Box Elder Landline 10/11/1997

Other Series For Prefixes

435-2570###
435-2571###
435-2572###
435-2573###
435-2574###
435-2575###
435-2576###
435-2577###
435-2578###
435-2579###