Robtex

Up: 209.0.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 209.0.0.0/17
Down right: 209.0.128.0/17
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
209.0.0.0	PTR	unknown.level3.net
209.0.0.0	A	ns1.xnsla.com
209.0.0.0	A	ns2.xnsla.com
209.0.0.1	PTR	unknown.level3.net
209.0.0.2	PTR	unknown.level3.net
209.0.0.3	PTR	unknown.level3.net
209.0.1.0	PTR	unknown.level3.net
209.0.1.1	PTR	unknown.level3.net
209.0.1.3	PTR	machine003.intellipost.com
209.0.3.1	PTR	unknown.level3.net
209.0.8.2	PTR	unknown.level3.net
209.0.10.2	PTR	electra.znyx.com
209.0.27.130	PTR	grape.hostpond.com
209.0.27.130	A	4a1service.com
209.0.27.130	A	beringseacrab.com
209.0.37.2	PTR	ns1.interx.net
209.0.37.5	A	sql.interx.net
209.0.40.0	PTR	unknown.level3.net
209.0.40.1	PTR	unknown.level3.net
209.0.40.3	PTR	unknown.level3.net
209.0.40.18	A	arlsmtp1.verizongni.com
209.0.40.19	A	arlsmtp2.verizongni.com
209.0.40.51	A	arlmops.verizongni.com
209.0.48.151	A	smtp.businessgenetics.com
209.0.48.161	A	exch.businessgenetics.com
209.0.56.10	A	relay.oenocorkfinishing.com
209.0.64.6	A	verizon-esg.hsa1.level3.net
209.0.68.14	A	verizon-esg.hsa2.level3.net
209.0.68.17	A	e0.hei2.bbnplanet.net
209.0.68.35	A	main06.usw.salvationarmy.org
209.0.68.42	A	verizon-esg.hsa2.level3.net
209.0.68.54	A	s0.crescentheightsdbaal.bbnplanet.net
209.0.74.3	PTR	unknown.level3.net
209.0.75.1	PTR	209-0-75-001.epigram.com
209.0.75.2	PTR	ns1.epigram.com
209.0.75.3	PTR	gated.epigram.com
209.0.100.1	A	core.sf.libritas.com
209.0.100.6	A	mx1.libritas.com
209.0.100.8	A	mail1.sf.libritas.com
209.0.100.8	A	libritas.com
209.0.110.65	A	mofo.com.sg
209.0.110.65	A	morrisonfoerster.be
209.0.112.15	A	ftp.gslb.bfds.com
209.0.112.19	A	ns2.bfds.com
209.0.112.23	A	ns3.bfds.com
209.0.112.26	A	mail39.bfds.com
209.0.113.200	A	host.flextronics.com
209.0.113.201	A	host.flextronics.com
209.0.113.202	A	host.flextronics.com
209.0.113.203	A	host.flextronics.com
209.0.113.204	A	host.flextronics.com
209.0.113.205	A	host.flextronics.com
209.0.113.206	A	host.flextronics.com
209.0.113.207	A	host.flextronics.com
209.0.113.208	A	host.flextronics.com
209.0.113.209	A	host.flextronics.com
209.0.114.19	A	ns.bfds.com
209.0.114.23	A	ns4.bfds.com
209.0.114.26	A	mail38.bfds.com
209.0.114.30	A	www.plansponsorfiles.com
209.0.136.10	A	host-se10.res.openband.net
209.0.136.154	A	jjmc.net
209.0.136.154	A	jdmcdonald70.net
209.0.136.218	A	host-se218.res.openband.net
209.0.137.56	A	host-sf56.res.openband.net
209.0.137.229	A	host-sf229.res.openband.net
209.0.138.26	A	host-sg26.res.openband.net
209.0.138.180	A	virtual-island.com
209.0.138.196	A	host-sg196.res.openband.net
209.0.138.210	A	vectorprosolutions.com
209.0.139.62	A	host-sh62.res.openband.net
209.0.139.114	A	host-sh114.res.openband.net
209.0.139.172	A	host-sh172.res.openband.net
209.0.139.194	A	host-sh194.res.openband.net
209.0.140.2	PTR	host-si2.res.openband.net
209.0.140.2	A	www.unemployedd.com
209.0.140.2	A	ritemr.com
209.0.141.14	A	mx.daapps.com
209.0.141.14	A	caseos.net
209.0.141.14	A	host-sj14.res.openband.net
209.0.142.2	PTR	host-sk2.res.openband.net
209.0.142.2	A	nathanpicot.com
209.0.142.2	A	tieroneapps.com
209.0.143.132	A	thedc-group.com
209.0.143.132	A	carolesquilts.com
209.0.143.132	A	www.debtadvisory.com
209.0.143.135	A	spamfilter3.ntconnections.net
209.0.144.9	A	totalrealitymedia.com
209.0.144.9	A	www.elitemarketingsolutionsinc.com
209.0.144.9	A	elitemarketingsolutionsinc.com
209.0.146.54	A	91callcenter.com
209.0.146.100	A	www.cyveillanceblog.com
209.0.146.100	A	www.cyveillance.com
209.0.146.100	A	cyveillance.co.uk
209.0.152.58	A	geplanningsolutions.com
209.0.153.139	A	berlitzpublishing.net
209.0.153.139	A	berlitzpublishing.org
209.0.183.228	A	luminousent.tv
209.0.183.228	A	luminousent.net
209.0.188.5	A+PTR	ns2.ptr.pgtel.net
209.0.191.5	A	ns1.ptr.pgtel.net
209.0.191.5	A	lax-sj-oc3-pos.iccinternet.com
209.0.191.6	A	sj-lax-oc3-pos.iccinternet.com
209.0.191.131	A	pbx.iccinternet.com
209.0.202.0	PTR	unknown.level3.net
209.0.203.0	PTR	unknown.level3.net
209.0.203.162	A	mail.richardsonbros.com
209.0.204.5	A	gw7-level3.bigcity.net
209.0.204.17	A+PTR	gatekeeper-2-0-1.tunnel1-1-2.bigcity.net
209.0.204.25	A	atm-3-0-155m-northpoint-0-2.bigcity.net
209.0.204.26	A	atm-3-0-155m-northpoint-0-1.bigcity.net
209.0.205.11	PTR	ns1.bigcity.net
209.0.205.19	A+PTR	avgw.bigcity.net
209.0.205.25	A	ws3.bigcity.net
209.0.205.63	A	mailedge.bigcity.net
209.0.205.67	A	mx2800.bigcity.net
209.0.206.3	PTR	mail.detering.com
209.0.206.130	PTR	lark.com
209.0.206.155	A	gw-gamma.bigcity.net
209.0.206.165	A	sparklelighting.com
209.0.206.165	A	sparklesigns.com
209.0.206.165	A	mail.sparklelighting.com
209.0.207.2	A+PTR	pool2-209-0-207-2.bigcity.net
209.0.207.40	PTR	nova-exch-01.novalennium.com
209.0.207.42	A+PTR	exch.houseofpowerelectric.com
209.0.207.215	A	sentinel.padtechnologies.com
209.0.207.218	A	voip.pbxpad.net
209.0.208.110	PTR	elpaso.loweoffshore.com
209.0.208.197	A	mail.ores.com
209.0.208.198	A	barracuda.alliedinspectionco.com
209.0.208.208	A	spam.migurainsurance.com
209.0.208.211	A	patientfirsthealthrecord.org
209.0.208.212	A	patientfirsthealthrecord.org
209.0.210.13	PTR	sltc.net
209.0.210.26	A	bandwidth.bigcity.net
209.0.210.26	A	bigcity.net
209.0.210.26	A	my.bigcity.net
209.0.211.3	PTR	gw-coxcpa.txmstr.com
209.0.211.9	PTR	mail.kcohradio.com
209.0.211.11	PTR	mail.kcohradio.com
209.0.211.151	A	151-211-0-209-pool.bigcity.net
209.0.211.152	A	152-211-0-209-pool.bigcity.net
209.0.211.154	A	154-211-0-209-pool.bigcity.net
209.0.211.155	A	155-211-0-209-pool.bigcity.net
209.0.218.4	PTR	unusable.network.descriptor
209.0.225.18	A	williams-level3-oc12.chicago1.level3.net
209.0.225.62	A	eli-level3-vlan.chicago1.level3.net
209.0.227.1	A	p1-0.xpaloalto17-level3.bbnplanet.net
209.0.227.1	A	xpaloalto17-level3.bbnplanet.net
209.0.227.30	A	att-level3-oc48.sanjose1.level3.net
209.0.227.50	A	jta-level3-oc3.losangeles1.level3.net
209.0.227.58	A	jta-level3-oc3.losangeles1.level3.net
209.0.254.26	A	mail1.klamathhouse.com