Robtex

Up: 192.5.18.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 192.5.18.0/25
Down right: 192.5.18.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
192.5.18.1	PTR	gw.darpa.mil
192.5.18.2	PTR	ws18-2.darpa.mil
192.5.18.3	PTR	ws18-3.darpa.mil
192.5.18.6	A+PTR	responsivelaunchchallenge.com
192.5.18.6	PTR	www.darpalaunchchallenge.com
192.5.18.6	A+PTR	www.responsivelaunchchallenge.com
192.5.18.9	A	webedge.darpa.mil
192.5.18.11	A	webedge.darpa.mil
192.5.18.11	A	darpasbir.net
192.5.18.11	A	theroboticschallenge.net
192.5.18.14	PTR	vehicleforge.mil
192.5.18.15	A+PTR	dtaw-01.darpa.mil
192.5.18.23	A+PTR	ws23.darpa.mil
192.5.18.24	A+PTR	ws18-24.darpa.mil
192.5.18.31	A+PTR	ws18-31.darpa.mil
192.5.18.32	A+PTR	ws18-32.darpa.mil
192.5.18.33	A+PTR	ws18-33.darpa.mil
192.5.18.34	A	ws18-34.darpa.mil
192.5.18.35	PTR	ws18-35.darpa.mil
192.5.18.40	A+PTR	ws18-40.darpa.mil
192.5.18.42	A+PTR	dsobaa.darpa.mil
192.5.18.43	A	stobaa.darpa.mil
192.5.18.45	PTR	sbirereg.darpa.mil
192.5.18.48	A+PTR	casa-05.darpa.mil
192.5.18.51	PTR	ets2.darpa.mil
192.5.18.58	A+PTR	seaw-01.darpa.mil
192.5.18.58	A+PTR	seaw-01.extranet.darpa.mil
192.5.18.60	A+PTR	extranet.darpa.mil
192.5.18.61	A	immunix.net
192.5.18.61	A	www.immunix.net
192.5.18.63	PTR	mailgate3.darpa.mil
192.5.18.63	PTR	cac.extranet.darpa.mil
192.5.18.66	A+PTR	mailgate3.darpa.mil
192.5.18.66	A	mail.darpa.mil
192.5.18.67	A+PTR	mailgate4.darpa.mil
192.5.18.70	A+PTR	ns2.darpa.mil
192.5.18.74	A	ws18-74.darpa.mil
192.5.18.75	A+PTR	ddco.darpa.mil
192.5.18.90	A+PTR	www.tfims.darpa.mil
192.5.18.90	A+PTR	tfims.darpa.mil
192.5.18.90	PTR	cers.darpa.mil
192.5.18.105	PTR	iso.darpa.mil
192.5.18.107	A+PTR	dtsn.darpa.mil
192.5.18.115	PTR	darpasubtchallenge.com
192.5.18.115	PTR	darpasubterraneanchallenge.org
192.5.18.115	PTR	subtchallenge.com
192.5.18.117	A+PTR	sco.mil
192.5.18.120	PTR	websearch.darpa.mil
192.5.18.124	PTR	demo.tfims.darpa.mil
192.5.18.124	PTR	mag.darpa.mil
192.5.18.130	A+PTR	archive.darpa.mil
192.5.18.132	A	loginrecover.darpa.mil
192.5.18.133	A+PTR	passrecover.darpa.mil
192.5.18.135	A+PTR	baa.darpa.mil
192.5.18.137	PTR	*.darpacybergrandchallenge.org
192.5.18.137	A+PTR	*.darpacybergrandchallenge.com
192.5.18.137	PTR	cybergrandchallenge.com
192.5.18.140	PTR	aeo.darpa.mil
192.5.18.143	A+PTR	actuv.darpa.mil
192.5.18.143	A	vehicleforge.mil
192.5.18.146	A	sbirereg.darpa.mil
192.5.18.161	PTR	casa-03.darpa.mil
192.5.18.162	A	casax-fs-1.darpa.mil
192.5.18.163	PTR	alt.trp.darpa.mil
192.5.18.163	A	casax-fs-2.darpa.mil
192.5.18.169	PTR	fmd3.darpa.mil
192.5.18.172	PTR	www.ucav.darpa.mil
192.5.18.180	PTR	www.tfims.darpa.mil
192.5.18.195	A+PTR	ns1.darpa.mil
192.5.18.195	A	ns1.arpa.mil
192.5.18.196	PTR	ns6.darpa.mil
192.5.18.210	A	cersloginrecover.darpa.mil
192.5.18.231	A+PTR	darpa.mil
192.5.18.234	A	opencatalog.darpa.mil
192.5.18.235	A+PTR	highdef.darpa.mil
192.5.18.235	PTR	contact.darpa.mil
192.5.18.235	PTR	www.darpalaunchchallenge.com
192.5.18.236	A+PTR	search.darpa.mil
192.5.18.239	A	mag.darpa.mil
192.5.18.243	A+PTR	sbirindustryday.darpa.mil