bn:00865769n
Noun Concept
Categories: Chicago, Illinois, Area codes in Illinois, Articles with short description, Telecommunications-related introductions in 1947, 1947 introductions
EN
area code 312  312  312 area code  Chicago area codes  Telephone numbers in Chicago
EN
Area code 312 is a telephone area code in the North American Numbering Plan for the city of Chicago, including downtown, the Chicago Loop, and its immediate environs. Wikipedia
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EN
Area code 312 is a telephone area code in the North American Numbering Plan for the city of Chicago, including downtown, the Chicago Loop, and its immediate environs. Wikipedia
Area code of Downtown Chicago Wikidata
Wikipedia
Wikidata
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