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AT&T Illinois Dearborn Central office (Chicago, Illinois)

USA / Illinois / Chicago / Chicago, Illinois / North Dearborn Street, 509
 telephone exchange building  Add category

Contains both end and tandem switches. Office space exist on several floors.
CLLI = CHCGILID
www.dslreports.com/coinfo/clli/CHCGILID
Nearby cities:
Coordinates:   41°53'27"N   87°37'44"W
This article was last modified 13 years ago