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Phone Directory 312-630 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-630 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-6300###
312-6301###
312-6302###
312-6303###
312-6304###
312-6305###
312-6306###
312-6307###
312-6308###
312-6309###