Fiber Carrier Maps
Fiber map for Level3
http://maps.level3.com/default/
Illinois Managed WAN, Ethernet, Dark Fiber & IP Services | Sunesys, LLC
http://www.sunesys.com/coverage/illinois/
Zayo Chicago fiber map
http://www.zayo.com/interactive-map?zoom=12&mapCenter=-87.632408,41.884151
WOW! Partner Alliance Fiber Maps
http://www.wowforbusiness.com/company/partner-alliance/fiber-maps
https://docs.globalnoc.iu.edu/cicomnipop/file-bin/chicagoland-chicagocity-fiber.kmz
Metro Fiber Maps: Chicago Metro Area | Telecom Ramblings
http://www.telecomramblings.com/metro-fiber-maps/chicago/