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217 Cent. Illinois: Springfield 84 DSL providers 309 W Cent. Illinois: Peoria 81 DSL providers 312 Illinois: Chicago 84 DSL providers 618 S Illinois: Centralia 74 DSL providers 630 W NE Illinois, western suburbs of Chicago 84 DSL providers | 708 Illinois: southern and western suburbs of Chicago 83 DSL providers 773 Illinois: city of Chicago, outside the loop 80 DSL providers 815 NW Illinois: Rockford, Kankakee 83 DSL providers 847 Northern NE Illinois: northwestern suburbs of chicago 84 DSL providers 224 Northern NE Illinois: Evanston, Waukegan, Northbrook 4 DSL providers |