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Phone Directory 773-257 Detail

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Illinois Chicago Central

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Example: (773) 257-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
773-257 Chicago, IL Ameritech Illinois Cook Landline 10/15/1996

Other Series For Prefixes

773-2570###
773-2571###
773-2572###
773-2573###
773-2574###
773-2575###
773-2576###
773-2577###
773-2578###
773-2579###