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Area Code 312-Chicago,IL

Below is the information for Area Code 312
General Information for Area Code 312
Country United States
City Chicago
State Illinois
Capital Springfield
Time Zone Central Standard Time (CST)
UTC -06:00
DST -05:00
 

Phone directory of numbers beginning with Area Code 312 Prefixes

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Areacode-Prefix Ratecenter Carrier/Company OCN Phone
312-201CHICGOZN01AMERITECH ILLINOIS9329
312-202CHICGOZN01AMERITECH ILLINOIS9329
312-203CHICGOZN01NEW CINGULAR WIRELESS PCS, LLC - IL6534
312-204CHICGOZN01AMERITECH ILLINOIS9329
312-205CHICGOZN01ALLEGIANCE TELECOM, INC. - IL8950
312-206CHICGOZN01NEW CINGULAR WIRELESS PCS, LLC - IL6534
312-207CHICGOZN01AMERITECH ILLINOIS9329
312-208CHICGOZN01NEW CINGULAR WIRELESS PCS, LLC - IL6534
312-209NORTHBROOKCELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL6333
312-212CHICGOZN01AMERITECH ILLINOIS9329
 
 

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Location Details

Area code is a type of numbering scheme used in telecommunication. It divides the territories of its member countries, the code is a three-digit code. The digits 0 and 1 applied for central office codes. Other digits were applied into geographic areas of the service territory.

 

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