Robtex

Up: 100.42.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 100.42.16.0/21
Down right: 100.42.24.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
100.42.17.2	A	mail.yantiply.com
100.42.17.2	A	yantiply.com
100.42.17.2	A	www.yantiply.com
100.42.17.62	PTR	100-42-17-62.positions-logical.com
100.42.17.62	A	wokicand.com
100.42.17.62	A	mail.wokicand.com
100.42.17.118	A+PTR	clegrid.net
100.42.17.122	A+PTR	msgin.clegrid.net
100.42.17.122	A	mail.utagralm.com
100.42.17.122	A	utagralm.com
100.42.17.174	A+PTR	yesrnational.net
100.42.17.182	A+PTR	responder.yesrnational.net
100.42.17.182	A	mail.ustictub.com
100.42.17.182	A	ustictub.com
100.42.17.242	PTR	atl31.virtualories.com
100.42.17.242	A	ursicarl.com
100.42.17.242	A	mail.besebia.com
100.42.18.2	A+PTR	smtp2-4.mailer.prospectrmarketing.com
100.42.18.2	A	ns1.rubyunbar.com
100.42.18.2	A	ns2.rubyunbar.com
100.42.18.3	A	callobetter.com
100.42.18.34	A	riveallrger.com
100.42.18.40	A	halloyages.com
100.42.18.45	A	endorsnowbik.com
100.42.18.130	A	keyinstrument.com
100.42.18.222	A+PTR	smtp2-224.mailer.prospectrmarketing.com
100.42.18.243	A+PTR	smtp2-245.mailer.prospectrmarketing.com
100.42.18.244	A+PTR	smtp2-246.mailer.prospectrmarketing.com
100.42.19.3	A	mail.ipweyk.com
100.42.19.3	A	bonevps.com
100.42.19.3	A	mail.divineright.org
100.42.19.4	PTR	sophocles.divineright.org
100.42.19.19	A	dc-cc3ea2342eb1.sknny.info
100.42.19.27	A	projectasias.com
100.42.19.30	A	accionchicagoblog.org
100.42.19.33	A	top5antivirusoftware.com
100.42.19.60	A	phone.seusan.com
100.42.19.60	A	phone.sexphonetube.com
100.42.19.60	A	phone.allyouporno.com
100.42.19.65	A	codess-reunion.org
100.42.19.75	A	dc-7ef1f05c.dab-os.com
100.42.19.75	A	dc-498c4cdebd1d.dab-os.com
100.42.19.97	A	northfire.net
100.42.19.97	A	exiul.com
100.42.19.97	A	exiul.net
100.42.19.98	PTR	northfire.net
100.42.19.99	PTR	northfire.net
100.42.19.100	A+PTR	northfire.net
100.42.19.100	A	exiul.net
100.42.19.116	A	www.phantasia4.net
100.42.19.116	A	phantasia5.com
100.42.19.116	A	phantasia6.com
100.42.19.143	A	mx.80srockconcerts.com
100.42.19.148	A	www-home.org
100.42.19.170	PTR	server1.infomedicalexperts.com
100.42.19.170	A	server1.cleangreenexperts.com
100.42.19.172	A+PTR	server2.infomedicalexperts.com
100.42.19.172	A	server2.cleangreenexperts.com
100.42.19.173	A	server3.cleangreenexperts.com
100.42.19.174	PTR	server4.infomedicalexperts.com
100.42.19.176	A+PTR	server6.infomedicalexperts.com
100.42.19.176	A	server6.cleangreenexperts.com
100.42.19.180	A	dc-ef99f1810c13.sttdyy.info
100.42.19.181	A	mail.frogdog.org
100.42.19.198	A+PTR	vm.t-boom.com
100.42.19.200	A	mx.daneandsusan.com
100.42.19.205	A	0nenightstand.ru
100.42.19.205	A	oldschoolmethod.ru
100.42.19.245	A	ns1.nsdns77.net
100.42.20.21	PTR	3391-row.fewback.com
100.42.20.21	A	ns2.reutomatic.com
100.42.20.68	A+PTR	ip-100-42-20-68.fibre.fibrestream.ca
100.42.20.68	A	www.daev.ca
100.42.20.132	A	juntoking.com
100.42.22.236	A	ip-100-42-22-236.fibre.fibrestream.ca
100.42.24.10	A	stats.dealerspike.com
100.42.24.21	A	ftp.ws1.dealerspike.net
100.42.24.30	A+PTR	incomingmail.dealerspike.com
100.42.24.38	A	www.hpnt.net
100.42.24.39	A	www.thunderrv.com
100.42.24.39	A	www.holland-motorhomes.com
100.42.24.39	A	www.fnsrv.com
100.42.24.63	A	wfmextrememotorsports.com
100.42.24.67	A	ssl67.dealersites.dealerspike.com
100.42.24.102	A	actionatvtrailers.com
100.42.24.102	A	sportsmanschoicemarine.com
100.42.24.102	A	ridenowcraig.com
100.42.24.112	A	sarsteinbach.com
100.42.24.112	A	indianmotorcyclechandler.com
100.42.24.113	A	ktrnc.com
100.42.24.114	A	ssl04.dealersites.dealerspike.com
100.42.24.133	A	awk.relaysecurity.com
100.42.24.187	A	connectgt.com
100.42.24.187	A	accessgt.net
100.42.24.187	A	mygtlink.com
100.42.24.188	A	rugbeme.info
100.42.24.242	PTR	host.smwwearena.com
100.42.24.242	A	sportscareertraining.com
100.42.24.242	A	smwwfootball.com
100.42.24.244	PTR	host.smwwearena.com
100.42.25.7	A	rwhois.forked.net
100.42.25.8	A	salmontrolling.com
100.42.25.8	A	macosx.forked.net
100.42.25.8	A	alexmcniven.com
100.42.26.31	PTR	100-42-26-31.addarpa.com
100.42.26.252	A+PTR	gad8jnadg.kaihfansdaf.com
100.42.28.34	PTR	decorativetouch.tech
100.42.28.42	A	getscorp.amalatv.com
100.42.28.46	A	boatyardclub.ertcc.com
100.42.28.69	PTR	mx69.usecoffee.com
100.42.28.226	A	virtualvm.com
100.42.28.227	A	c64.forked.net
100.42.28.228	A+PTR	blagodat.com
100.42.28.228	A	blagodat.net
100.42.29.10	A	ninjatrak.com
100.42.29.170	A	oncor.us
100.42.29.170	A	ocnor.com
100.42.29.179	PTR	mx179.networkavni.com
100.42.29.187	A	smtp.studante.com
100.42.29.187	A	studante.com
100.42.29.211	A	typodongu.info
100.42.29.211	A	whatwewantdad.info
100.42.29.211	A	agorinack.info
100.42.29.219	PTR	performancebasedtrade.net
100.42.30.2	PTR	us-mission-tx-78572.getastatic.com
100.42.30.2	A	pinghostor.nodeping.com
100.42.30.16	A	tut.theupdatestoday.com
100.42.30.17	A	hut2.healthyupdatetoday.com
100.42.30.18	PTR	us-mesa-az-85201.getastatic.com
100.42.30.18	A	wkt1.whoknewthis.net
100.42.30.18	A	tsd.thesciencedailyupdate.com
100.42.30.34	PTR	docker2-pdx.ag1.thousandeyes.com
100.42.30.51	PTR	us-fortwayne-in-46802.getastatic.com
100.42.30.51	A	mht-eh.wap3gp.com
100.42.30.66	A	tech-preneurs.com
100.42.30.98	A	mx.sprinciple.com
100.42.31.3	PTR	ms3.tr1tonmail.com
100.42.31.155	A	teampcb.com
100.42.31.155	A	mail.nrdsi.com
100.42.31.155	A	mail.teampcb.com
100.42.31.162	PTR	becks.tareducate.com
100.42.31.162	A	*.unixlocator.com
100.42.31.162	A	unixlocator.com
100.42.31.169	A	maelcover.com