Given a text passage, come up with an appropriate title for it. The title should accurately represent what the main focus of the passage is. The title of a passage may be present in the first few sentences of the passage and/or be referred to multiple times in the passage. The title should be 1-5 words long.

Telephone area code 708 covers western and southern Cook County and eastern and southern Will County in the state of Illinois , USA . Area code 708 was split off from area code 312 on November 11 , 1989 , and once covered almost all of the suburbs of Chicago . In 1996 , area code 847 and area code 630 were broken off from 708 . Area code 464 is being reserved as an overlay area code for 708 to provide additional numbering options for this area .
Area code 708