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Phone Directory 312-203 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-203 Chicago, IL New Cingular Wireless PCS Cook Cell Number 11/11/2003

Other Series For Prefixes

312-2030###
312-2031###
312-2032###
312-2033###
312-2034###
312-2035###
312-2036###
312-2037###
312-2038###
312-2039###