Robtex

Up: 128.42.128.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 128.42.160.0/20
Down right: 128.42.176.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
128.42.169.3	A+PTR	jenkins.cnx.org
128.42.169.4	A+PTR	bokken.cnx.rice.edu
128.42.169.4	A	bunker.cnx.rice.edu
128.42.169.7	A	wakizashi.cnx.rice.edu
128.42.169.9	A	openstaxcnx.org
128.42.169.33	PTR	legacy-staging5.cnx.org
128.42.169.33	A	staging5.cnx.org
128.42.169.34	A+PTR	bowie.cnx.rice.edu
128.42.169.34	A	openstaxcnx.org
128.42.169.56	A+PTR	prod05.cnx.org
128.42.169.155	A	senova.rice.edu
128.42.169.160	A+PTR	davos.rice.edu
128.42.169.163	A+PTR	huntsville.rice.edu
128.42.169.169	A	newseattle.rice.edu
128.42.169.173	A	seville.rice.edu
128.42.169.203	A	athens.rice.edu
128.42.169.211	A	sanmarcos.rice.edu
128.42.169.215	A	seoul.rice.edu
128.42.169.222	A	edgar-ir.rice.edu
128.42.169.225	A+PTR	villarreal.rice.edu
128.42.173.16	A+PTR	bioc-login.rice.edu
128.42.173.16	A	bioc.rice.edu
128.42.173.61	A+PTR	math.rice.edu
128.42.173.64	A	seclabvm.rice.edu
128.42.173.64	A	accurate-voting.org
128.42.173.64	A	trackback.cs.rice.edu
128.42.173.103	A	ams.rice.edu
128.42.173.103	A	ams2.rice.edu
128.42.174.6	A	fonlibweb.rice.edu
128.42.176.12	A	vm002.rice.edu
128.42.176.17	PTR	jones.rice.edu
128.42.176.26	A+PTR	sitedisk1.rice.edu
128.42.176.31	A	nagios2.rice.edu
128.42.176.33	A+PTR	is.rice.edu
128.42.176.33	A	it.is.rice.edu
128.42.176.39	A+PTR	hta.rice.edu
128.42.176.39	A	dc281.org
128.42.177.227	A	noise.ktru.org
128.42.177.227	A	noise.rice.edu
128.42.177.229	A+PTR	bang.rice.edu
128.42.178.2	A+PTR	net-host1.rice.edu
128.42.178.6	PTR	cobra-kai.caam.rice.edu
128.42.178.18	A	flood-alert.org
128.42.178.18	A	braysprod.flood-alert.org
128.42.178.32	A+PTR	ns2.rice.edu
128.42.180.36	A+PTR	ike.rice.edu
128.42.180.36	A	ike.flood-alert.org
128.42.181.167	A+PTR	atomcool.rice.edu
128.42.182.100	A+PTR	epony.emergency.smu.edu
128.42.182.113	A	outage.smu.edu
128.42.182.113	A	emergency.smu.edu
128.42.182.229	A+PTR	rt2.rice.edu
128.42.182.233	A+PTR	rt3-helpdesk.rice.edu
128.42.182.233	A	helpdesk.rice.edu
128.42.182.236	A	help.rice.edu