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Phone Directory 312-661 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-661 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-6610###
312-6611###
312-6612###
312-6613###
312-6614###
312-6615###
312-6616###
312-6617###
312-6618###
312-6619###