Robtex

Up: 18.181.0.0/16
Can't show all results, try to descend to a more specific CIDR
Down left: 18.181.0.0/18
Down right: 18.181.64.0/18
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
18.181.0.3	A	deficit-cloaking-device.mit.edu
18.181.0.19	A	reynelda.mit.edu
18.181.0.21	A	split-atom-blues.mit.edu
18.181.0.22	A	rosebud2.mit.edu
18.181.0.131	PTR	ec2-18-181-0-131.ap-northeast-1.compute.amazonaws.com
18.181.0.131	A	scratchbox.mit.edu
18.181.0.133	A	sipb-vm-57.mit.edu
18.181.0.134	A	xvm-console.mit.edu
18.181.0.134	A	sipb-xen-console.mit.edu
18.181.1.23	A+PTR	xvm-one-23.mit.edu
18.181.1.23	A	qsort.kaseorg.com
18.181.1.23	A	foo.kaseorg.com
18.181.1.30	A	honnouji.academy
18.181.1.133	A	rolltreppemusic.com
18.181.1.170	A	xvm-one-170.mit.edu
18.181.1.173	A	xvm-one-173.mit.edu
18.181.1.173	A	mastodon.mit.edu
18.181.2.1	A	xvm-1.mit.edu
18.181.2.1	A	jontec7.com
18.181.2.4	A+PTR	xvm-4.mit.edu
18.181.2.4	A	ns3.static.net
18.181.2.145	A	xvm-145.mit.edu
18.181.2.145	A	yz.mit.edu
18.181.2.149	A	monicasun.net
18.181.2.149	A	mail.monicasun.net
18.181.3.8	A	audaceonline.com
18.181.3.39	A	xvm-three-39.mit.edu
18.181.3.42	A	xvm-three-42.mit.edu
18.181.3.66	A	xvm-three-66.mit.edu
18.181.3.129	A+PTR	xvm-three-129.mit.edu
18.181.3.174	A	xvm-three-174.mit.edu
18.181.3.175	A	art-deco.caffeinatedkittens.org
18.181.3.188	A	zbox.me
18.181.4.9	A+PTR	xvm-four-9.mit.edu
18.181.4.9	A	stripenight.com
18.181.4.9	A	michaelaryeh.com
18.181.4.41	A	xvm-four-41.mit.edu
18.181.4.161	PTR	xvm-four-161.mit.edu
18.181.4.176	A	xvm-four-176.mit.edu
18.181.4.187	A	justinholmgren.com
18.181.4.195	A	xvm-four-195.mit.edu
18.181.4.195	A	benjaminbarenblat.com
18.181.5.1	A	xvm-five-1.mit.edu
18.181.5.28	A+PTR	xvm-five-28.mit.edu
18.181.5.37	A+PTR	xvm-five-37.mit.edu
18.181.5.61	A	ctlfish.mit.edu
18.181.5.145	A+PTR	fenwayhouse.mit.edu
18.181.5.145	A	koumba.org
18.181.5.173	PTR	xvm-five-173.mit.edu
18.181.5.173	A	polk.in
18.181.5.186	PTR	mta59.hotprofile.biz
18.181.5.186	A	ec2-18-181-5-186.ap-northeast-1.compute.amazonaws.com
18.181.5.187	PTR	xvm-five-187.mit.edu
18.181.6.14	A+PTR	ec2-18-181-6-14.ap-northeast-1.compute.amazonaws.com
18.181.6.14	A	ericdahlseng.com
18.181.6.14	A	adroitnotes.com
18.181.6.37	PTR	xvm-six-37.mit.edu
18.181.6.56	PTR	amphibious.mit.edu
18.181.6.134	A+PTR	xvm-six-134.mit.edu
18.181.6.134	A	vervious.com
18.181.6.174	PTR	xvm-six-174.mit.edu
18.181.6.174	A	beachsdg.xvm.mit.edu
18.181.6.193	PTR	xvm-six-193.mit.edu
18.181.6.193	A	pen-ed.com
18.181.6.207	PTR	xvm-six-207.mit.edu
18.181.7.157	PTR	ec2-18-181-7-157.ap-northeast-1.compute.amazonaws.com
18.181.7.249	PTR	hydropump.torapants.net
18.181.9.85	A	xn--cjrstf9ji5xgzrx58aj1b.com
18.181.10.184	PTR	mail-c7-tk01.jecc.jp
18.181.11.168	A	newswars.com.au
18.181.12.65	A	keieihackerback-prd.y4u6jyjf3h.ap-northeast-1.elasticbeanstalk.com
18.181.17.59	PTR	lx-ml06aws.e-state.co.jp
18.181.23.49	A	zenback.topics.newzia.jp
18.181.23.240	PTR	ec2-18-181-23-240.ap-northeast-1.compute.amazonaws.com
18.181.26.242	A	greens.gr.jp
18.181.29.28	A	deainoinfo.com
18.181.29.168	A	gu3.jp
18.181.30.249	A	blogmura.com
18.181.31.227	A	hrnet.co.jp
18.181.32.183	PTR	sv608.frsrv.jp
18.181.33.80	A	ssl.sb.sp.mbga-platform.jp
18.181.36.133	A	castbox.fm
18.181.41.114	PTR	aws02.dao.jp
18.181.42.236	PTR	mail.citadel.one
18.181.43.211	A	itnews.org
18.181.44.62	A	en-jine.com
18.181.47.76	A	log.cinematoday.jp
18.181.49.83	A	ip2c-landscape-cojp20170801-151031127.ap-northeast-1.elb.amazonaws.com
18.181.55.82	A	contx.net
18.181.57.87	A	prd-elb-boxmanager-2024207910.ap-northeast-1.elb.amazonaws.com
18.181.58.178	A	auth-api.whoscall.com
18.181.59.148	A	bbtower.qiita.com
18.181.60.157	A	roo.cash
18.181.61.70	A	tonarinoyj.jp
18.181.65.49	PTR	ginza.kabukizabutai.co.jp
18.181.70.126	A	newspicks.com
18.181.71.67	PTR	ec2-18-181-71-67.ap-northeast-1.compute.amazonaws.com
18.181.72.178	A	mailinbound.hatena.ne.jp
18.181.91.103	PTR	gm6039-01.mbga.jp
18.181.94.53	A	www.imaonline.jp
18.181.96.36	A	77unt.com
18.181.96.36	A	88dtm.com
18.181.103.3	A	cyta.jp
18.181.103.69	A	appbox.jp
18.181.103.75	A	spotag.com
18.181.103.121	A	bownow.jp
18.181.104.193	A	www.dgfcoin.org
18.181.108.89	A	m.asiame.com
18.181.108.89	A	www.asiame.com
18.181.108.89	A	asiame.com
18.181.112.210	A	ap.sansan.com
18.181.114.22	A	prds.net
18.181.114.132	A	login.dlsite.com
18.181.123.53	A	m-preview3.newspicks.com
18.181.123.144	A	ikiri-switch.com
18.181.123.243	A	comi-para.jp
18.181.124.80	PTR	global-outmail1.prod1.goldwin.co.jp
18.181.127.73	A	www.snapsnap.jp