Robtex

Up: 216.105.224.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 216.105.240.0/21
Down right: 216.105.248.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.105.240.16	A+PTR	tdamail.tdameritrade.com
216.105.240.16	A	autodiscover.tdameritrade.com
216.105.240.35	A+PTR	nsglba-uat-jc.tdameritrade.com
216.105.240.40	A+PTR	nsara-jc.tdameritrade.com
216.105.240.41	A	associate.tdameritrade.com
216.105.240.42	A	smail.ameritrade.com
216.105.240.70	A+PTR	nsglba-jc.tdameritrade.com
216.105.240.142	A+PTR	labportal.tdameritrade.com
216.105.240.229	A+PTR	prdjcavexpeb01.tdameritrade.com
216.105.240.240	A	hera.ameritrade.com
216.105.241.4	A	gslbst-jc.tdameritrade.com
216.105.241.30	A+PTR	trustmoveit-jc.tdameritrade.com
216.105.241.66	A+PTR	irebal-jc.advisorservices.com
216.105.241.93	A+PTR	dr-ameritrade03.streamer.com
216.105.241.93	A+PTR	new-jc.tdwaterhouse.com
216.105.241.94	A+PTR	dr-ameritrade03.streamer.com
216.105.245.5	A+PTR	drff.thinkorswim.com
216.105.245.11	A+PTR	dr_mediaserver.thinkorswim.com
216.105.245.19	A+PTR	imxdr.tdameritrade.com
216.105.245.29	A	dr.thinkorswim.com.sg
216.105.245.30	A	dr.thinkorswim.com
216.105.248.18	A+PTR	mr4.tdwaterhouse.com
216.105.248.18	A	mail-in.tdwaterhouse.com
216.105.248.18	A	mail-in.fftdwaterhouse.com
216.105.248.141	A	www.tdwcapmarkets.com
216.105.248.141	A	tdwcapmarkets.com
216.105.248.149	A	wtdw.com
216.105.248.250	A	rjt.com
216.105.248.250	A	www.rjt.com
216.105.249.8	A+PTR	eventsvc.thinkorswim.com
216.105.249.11	A	mediaserver.thinkorswim.com
216.105.249.13	A	tdahelp.net
216.105.249.15	A	tosmobile.com
216.105.249.17	A	tospipes.com
216.105.249.17	A	www.thinkpipes.com
216.105.249.17	A	thinkpipes.com
216.105.249.20	PTR	*.thinkorswim.hk
216.105.249.20	PTR	*.ameritrade.com.hk
216.105.249.20	PTR	*.tdameritrade.com.hk
216.105.249.139	A	demo.thinkorswim.com
216.105.249.139	A	mobile-demo.thinkorswim.com
216.105.249.141	A	demo.thinkorswim.com
216.105.249.141	A	mobile-demo.thinkorswim.com
216.105.249.142	A	demo.thinkorswim.com
216.105.249.142	A	mobile-demo.thinkorswim.com
216.105.249.143	A	demo.thinkorswim.com
216.105.249.143	A	mobile-demo.thinkorswim.com
216.105.249.156	PTR	tlmgw01.thinkorswim.com
216.105.249.156	A	tda.thinkorswim.com
216.105.249.156	A	team.thinkorswim.com
216.105.249.157	A	tda.thinkorswim.com
216.105.249.157	A	team.thinkorswim.com
216.105.249.158	A+PTR	tda.thinkorswim.com
216.105.249.158	A	team.thinkorswim.com
216.105.249.159	PTR	tlmgw04.thinkorswim.com
216.105.249.159	A	tda.thinkorswim.com
216.105.249.159	A	team.thinkorswim.com
216.105.249.160	PTR	pmmgw08.thinkorswim.com
216.105.249.160	A	demo.thinkorswim.com
216.105.249.160	A	mobile-demo.thinkorswim.com
216.105.249.161	PTR	tlmgw05.thinkorswim.com
216.105.249.161	A	tda.thinkorswim.com
216.105.249.161	A	team.thinkorswim.com
216.105.249.162	A	tda.thinkorswim.com
216.105.249.162	A	team.thinkorswim.com
216.105.249.163	PTR	tlmgw07.thinkorswim.com
216.105.249.163	A	tda.thinkorswim.com
216.105.249.163	A	team.thinkorswim.com
216.105.249.164	A	tda.thinkorswim.com
216.105.249.164	A	team.thinkorswim.com
216.105.249.165	A	tda.thinkorswim.com
216.105.249.165	A	team.thinkorswim.com
216.105.249.176	PTR	tlmgw14.thinkorswim.com
216.105.249.176	A	tda.thinkorswim.com
216.105.249.176	A	team.thinkorswim.com
216.105.249.177	A	tda.thinkorswim.com
216.105.249.177	A	team.thinkorswim.com
216.105.249.178	A	tda.thinkorswim.com
216.105.249.178	A	team.thinkorswim.com
216.105.249.183	A	tda.thinkorswim.com
216.105.249.183	A	team.thinkorswim.com
216.105.249.184	A	tda.thinkorswim.com
216.105.249.184	A	team.thinkorswim.com
216.105.249.191	A	demo.thinkorswim.com
216.105.249.191	A	mobile-demo.thinkorswim.com
216.105.249.191	A	demo-clientmux4.thinkorswim.com
216.105.249.200	A+PTR	update-demo.thinkorswim.com
216.105.249.201	A	update-demo.thinkorswim.com
216.105.249.202	A	update-demo.thinkorswim.com
216.105.249.203	A	update-demo.thinkorswim.com
216.105.249.209	PTR	tljas27.thinkorswim.com
216.105.249.210	PTR	pmmgw10.thinkorswim.com
216.105.249.210	A+PTR	demo-clientmux2.thinkorswim.com
216.105.249.210	A+PTR	demo-clientmux4.thinkorswim.com
216.105.249.211	PTR	tljas36.thinkorswim.com
216.105.249.212	PTR	tljas33.thinkorswim.com
216.105.249.213	A	demo.thinkorswim.com
216.105.249.213	A	mobile-demo.thinkorswim.com
216.105.249.213	A	demo-clientmux4.thinkorswim.com
216.105.249.227	A	update-team.thinkorswim.com
216.105.249.228	A	update-team.thinkorswim.com
216.105.249.229	PTR	mobile-demo.thinkorswim.com
216.105.249.229	A	streamer.thinkorswim.com
216.105.249.234	A	update-team.thinkorswim.com
216.105.249.235	A	update-team.thinkorswim.com
216.105.249.236	A	update-team.thinkorswim.com
216.105.249.237	A	update-team.thinkorswim.com
216.105.249.238	A	update-team.thinkorswim.com
216.105.249.239	A	update-team.thinkorswim.com
216.105.249.240	A	update-team.thinkorswim.com
216.105.249.241	A	update-team.thinkorswim.com
216.105.249.242	A	update-team.thinkorswim.com
216.105.249.243	A	update-team.thinkorswim.com
216.105.249.244	A	update-team.thinkorswim.com
216.105.249.252	A	update-team.thinkorswim.com
216.105.249.253	A	update-team.thinkorswim.com
216.105.250.20	A	unicamail.investools.com
216.105.250.40	A+PTR	nsara-ct.tdameritrade.com
216.105.250.41	A	associate.tdameritrade.com
216.105.250.42	A	smail.ameritrade.com
216.105.250.70	A+PTR	nsglba-ct.tdameritrade.com
216.105.250.71	PTR	poc-access.tdameritrade.com
216.105.250.71	A	remoteaccess.tdameritrade.com
216.105.250.113	A	demo.advisorservices.com
216.105.250.173	A	apiext-ste0.tdameritrade.com
216.105.250.180	A+PTR	sip.investools.com
216.105.250.180	PTR	sip.thinkorswim.com
216.105.250.180	A+PTR	sip.ameritrade.com
216.105.250.181	A+PTR	sip-ct.tdameritrade.com
216.105.250.181	A+PTR	sip.tdameritrade.com
216.105.250.181	A	sip.ameritrade.com
216.105.251.4	A	gslbst-ct.tdameritrade.com
216.105.251.12	A+PTR	trans1.tdameritrade.com
216.105.251.14	A	tdameritradestore.com
216.105.251.16	A+PTR	appdeumext-ct.tdameritrade.com
216.105.251.17	A	mmds.ameritrade.com
216.105.251.19	PTR	imx-ct.tdameritrade.com
216.105.251.19	A+PTR	imx-ct.ameritrade.com
216.105.251.19	A	imx.tdameritrade.com
216.105.251.20	PTR	toolbox.investools.com
216.105.251.21	PTR	online.investools.com
216.105.251.37	A	tdameritrade.streamer.com
216.105.251.37	A	ameritrade02.streamer.com
216.105.251.38	A	tdameritrade.streamer.com
216.105.251.38	A	ameritrade02.streamer.com
216.105.251.39	A+PTR	wwws-beta.tdameritraderetirement.com
216.105.251.39	A	tdameritrade.streamer.com
216.105.251.40	A	irebal.com
216.105.251.48	A	chairman.ameritrade.com
216.105.251.49	A+PTR	veo-ct.tdainstitutional.com
216.105.251.49	A	corporatesecretary.ameritrade.com
216.105.251.50	A	quotetracker.biz
216.105.251.53	PTR	amerivest.com
216.105.251.58	A	tradearchitect.com
216.105.251.66	A	irebal-ct.advisorservices.com
216.105.251.75	A	push.trade.tdameritrade.com
216.105.251.80	A	retirementadvocatefunds.com
216.105.251.80	A	goindependent.com
216.105.251.80	A	tdaretirementplansolutions.com
216.105.251.81	A+PTR	vagent-test.tdameritrade.com
216.105.251.82	PTR	vagent-test.ameritrade.com
216.105.251.99	A	crbportfolios.com
216.105.251.104	PTR	apis-tdamobile-ct.tdameritrade.com
216.105.251.104	A	apis-tdamobile.tdameritrade.com
216.105.251.105	A+PTR	invest-tdamobile-ct.ameritrade.com
216.105.251.105	A	invest-tdamobile.ameritrade.com
216.105.251.110	PTR	invest-ct.ameritrade.com
216.105.251.110	PTR	invest.ameritrade.com
216.105.251.110	A	investment1s.ameritrade.com
216.105.251.115	A	inceptusfunds.com
216.105.251.116	A	push-trade.tdameritrade.com
216.105.251.118	A+PTR	veoapi-ct.advisorservices.com
216.105.251.120	A	maximizemyriabusiness.com
216.105.251.128	A+PTR	retirementadvocatefunds.com
216.105.251.128	PTR	www-ct-new.retirementadvocatefunds.com
216.105.251.128	A+PTR	www-ct.retirementadvocatefunds.com
216.105.251.132	A+PTR	ct3-www.tdainstitutional.com
216.105.251.133	A+PTR	ct4-www.tdainstitutional.com
216.105.251.140	PTR	www-pmp-prd.tdameritradetrust.com
216.105.251.146	A+PTR	streamer-bin-fl.tdameritrade.com
216.105.251.147	A+PTR	streamer-ws.tdameritrade.com
216.105.251.150	A	streamer-grid-ws.tdameritrade.com
216.105.251.169	A+PTR	www-ct-new.strategictargetfunds.com
216.105.251.169	A+PTR	strategictargetfunds.com
216.105.251.169	A+PTR	www-ct.strategictargetfunds.com
216.105.251.172	A+PTR	ct-cfe-oauth.tdameritrade.com
216.105.251.183	PTR	tdatcedelmanfunds.com
216.105.251.183	A+PTR	sunriseretirementfunds.com
216.105.251.183	PTR	origin-www-ct.tdainstitutional.com
216.105.251.187	PTR	ct03-www.advisorclient.com
216.105.251.193	A+PTR	tdacsclientaccess.com
216.105.251.193	A+PTR	www-ct.tdacsclientaccess.com
216.105.251.196	PTR	invest3-ctc.ameritrade.com
216.105.251.196	PTR	invest2-ctc.ameritrade.com
216.105.251.196	PTR	invest-ctc.ameritrade.com
216.105.251.198	PTR	advisorclient.com
216.105.251.198	PTR	nextgen-ct.advisorclient.com
216.105.251.198	A+PTR	www-ct.advisorclient.com
216.105.251.203	A	theretirefunds.com
216.105.251.210	PTR	wwws-ct.tdameritrade.com
216.105.251.210	A	wwws.tdameritrade.com
216.105.251.211	A	investment1s.ameritrade.com
216.105.251.212	PTR	ofxs-ct.ameritrade.com
216.105.251.212	PTR	ofxs.ameritrade.com
216.105.251.213	A	wwwna.tdameritrade.com
216.105.251.214	A	theretirefunds.com
216.105.251.224	A	contactus.ameritrade.com
216.105.251.225	A	investment2s.ameritrade.com
216.105.251.226	A	investment3s.ameritrade.com
216.105.251.227	PTR	www-ct.tdaretirementplan.com
216.105.251.227	A+PTR	www-ct-new.tdaretirementplan.com
216.105.251.227	A+PTR	tdaretirementplan.com
216.105.251.240	A+PTR	tradearchitect.com
216.105.251.240	A+PTR	trade-ct.tdameritrade.com
216.105.251.240	A	trade.tdameritrade.com
216.105.251.244	A	tradewise.com
216.105.251.249	PTR	www-ct.mytrade.com
216.105.251.250	PTR	www-ct.advisorservices.com
216.105.252.15	A	moveit.tdameritradetrust.com
216.105.253.58	A+PTR	smtp.toolbox.investools.com
216.105.253.63	A	iedhost.investools.com
216.105.253.107	A+PTR	bsn-inbound.tdameritrade.com
216.105.253.108	A+PTR	mailout-e.tdameritrade.com
216.105.253.126	A+PTR	mailout-a.tdameritrade.com
216.105.253.127	A+PTR	mailout-b.tdameritrade.com
216.105.253.185	A+PTR	mailout-c.tdameritrade.com
216.105.253.227	PTR	ns3.tdameritrade.com
216.105.253.227	A	ns1.tdameritrade.com