Area codes 618 and 730 - Wikipedia
https://en.m.wikipedia.org/wiki/Area_codes_618_and_730
webArea codes 618 and 730 are telephone area codes in the North American Numbering Plan (NANP) for southern Illinois. The numbering plan area (NPA) comprises one hundred and twenty-six municipalities, such as Carbondale , Cairo , Belleville , East St. Louis , Edwardsville , Marion , O'Fallon , Alton , Mt. Vernon , Centralia , Herrin , Salem ...
DA: 74 PA: 35 MOZ Rank: 48