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Phone Directory 312-729 Detail
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Illinois
Chicago
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Area Code Prefixes
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Introduced
312-729
Chicago, IL
Ameritech Illinois
Cook
Landline
07/06/1997
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Other Series For Prefixes
312-7290###
Search Complaints
312-7291###
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312-7292###
Search Complaints
312-7293###
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312-7294###
Search Complaints
312-7295###
Search Complaints
312-7296###
Search Complaints
312-7297###
Search Complaints
312-7298###
Search Complaints
312-7299###
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