Robtex

Up: 163.191.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 163.191.0.0/20
Down right: 163.191.16.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
163.191.8.102	A+PTR	cs.dhs.illinois.gov
163.191.11.36	A+PTR	port2.ins.state.il.us
163.191.11.37	A	www2.ins.state.il.us
163.191.13.3	PTR	avoidtheryan.com
163.191.13.3	PTR	edensexpressway.com
163.191.13.3	PTR	edensi94.com
163.191.13.6	PTR	stl-traffic.org
163.191.13.6	PTR	www.stl-traffic.org
163.191.13.6	PTR	wrc.dot.il.gov
163.191.13.7	PTR	permits.dot.state.il.us
163.191.13.35	PTR	idotowa.dot.il.gov
163.191.13.35	A+PTR	ironmail.dot.il.gov
163.191.13.35	A+PTR	webmail.dot.il.gov
163.191.13.64	A+PTR	illinoisairportsmeanbusiness.com
163.191.13.64	PTR	safecommunitiesforillinois.com
163.191.13.64	A+PTR	apps.dot.illinois.gov
163.191.13.68	PTR	illinoistransportationplan.org
163.191.13.68	PTR	illinoisbikeplan.org
163.191.13.68	PTR	illinoisbikeplan.com
163.191.13.106	A	gis1.dot.illinois.gov
163.191.15.2	A	mail.ptb.state.il.us
163.191.15.3	PTR	rpocc.com
163.191.15.3	PTR	irocc.org
163.191.15.3	PTR	ptb.state.il.us.191.163.in-addr.arpa
163.191.16.111	A	dirksen.iema.state.il.us
163.191.16.145	A+PTR	ftp2.iema.state.il.us
163.191.16.145	A	ilcoop.iema.state.il.us
163.191.16.160	A+PTR	gisweb.iema.state.il.us
163.191.24.147	A	workinfo.state.il.us
163.191.24.193	A	www.ides.illinois.gov
163.191.24.201	A	illinoisjoblink.illinois.gov
163.191.24.201	A	illinoisjoblink.com
163.191.24.202	A+PTR	taxnet.ides.state.il.us
163.191.26.6	PTR	mx1.osad.state.il.us
163.191.26.6	A	osad.state.il.us
163.191.27.3	A+PTR	dpr.state.il.us
163.191.27.3	A+PTR	www.dpr.state.il.us
163.191.27.4	A	mail2.ildfpr.com
163.191.27.14	A+PTR	www2.ildpr.com
163.191.27.31	A	insurance.illinois.gov
163.191.27.32	A	www.insurance.illinois.gov
163.191.27.32	A	insurance.illinois.gov
163.191.29.10	A	www.srs.illinois.gov
163.191.29.10	A	srs.illinois.gov
163.191.31.3	A+PTR	aging.state.il.us