Robtex

Up: 198.200.170.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 198.200.171.0/25
Down right: 198.200.171.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
198.200.171.11	PTR	ps.ameritrade.com
198.200.171.11	A	dsevents.cfprod-tx.tdameritrade.com
198.200.171.11	A	balancehistory-w-tx.tdameritrade.com
198.200.171.16	A+PTR	appdeumext-tx.tdameritrade.com
198.200.171.21	PTR	dnsfoa-online.investools.com
198.200.171.21	A+PTR	pollster-tx.advisorservices.com
198.200.171.21	A	pollster.tdainstitutional.com
198.200.171.22	A+PTR	dnsfoa-www.investools.com
198.200.171.23	A	quote-tx.investools.com
198.200.171.29	A+PTR	developer-tx.tdameritrade.com
198.200.171.40	A+PTR	veo-tx.tdainstitutional.com
198.200.171.48	A+PTR	wps.tdameritrade.com
198.200.171.64	A+PTR	origin-www-tx.tdameritrade.com
198.200.171.64	A+PTR	tx-www.tdameritrade.com
198.200.171.64	PTR	tdameritrade.com
198.200.171.66	A+PTR	irebal-tx.advisorservices.com
198.200.171.73	A	vagent-tx.tdameritrade.com
198.200.171.89	A	thinkorswim.com
198.200.171.102	A+PTR	cmux-tx.thinkorswim.com
198.200.171.104	A+PTR	apis-tdamobile-tx.tdameritrade.com
198.200.171.105	A+PTR	invest-tdamobile-tx.ameritrade.com
198.200.171.110	A+PTR	dnsfoa-invest.ameritrade.com
198.200.171.110	A	invest-tx.ameritrade.com
198.200.171.116	A	push-trade-tx.tdameritrade.com
198.200.171.124	A+PTR	dnsfoa-invest.tdameritrade.com
198.200.171.124	A	invest-tx.tdameritrade.com
198.200.171.125	A+PTR	www-tx.managedretirementfunds.com
198.200.171.125	A	managedretirementfunds.com
198.200.171.126	A	goal-status-tx.tdameritrade.com
198.200.171.128	A+PTR	www-tx.retirementadvocatefunds.com
198.200.171.128	PTR	www-tx.tdaretirementplansolutions.com
198.200.171.128	A	tdaretirementplansolutions.com
198.200.171.137	A	streamer-ext-bin-tx.tdameritrade.com
198.200.171.138	A	streamer-ext-bin-tx.tdameritrade.com
198.200.171.142	A+PTR	dnsfoa-ofxs.ameritrade.com
198.200.171.142	A+PTR	ofxs-tx.ameritrade.com
198.200.171.143	A+PTR	streamer-bin-tx.tdameritrade.com
198.200.171.147	A+PTR	streamer-ws-tx.tdameritrade.com
198.200.171.150	A+PTR	streamer-grid-ws-tx.tdameritrade.com
198.200.171.162	A	www.essentialoptionstrategies.com
198.200.171.167	A	tx-staging.tdameritrade.com
198.200.171.172	A+PTR	tx-cfe-oauth.tdameritrade.com
198.200.171.185	A+PTR	portfolios-tx.tdameritrade.com
198.200.171.186	A+PTR	api-tx.tdameritrade.com
198.200.171.190	A+PTR	api-tx.mytrade.com
198.200.171.191	PTR	analytics-tx-tmp.tdameritrade.com
198.200.171.198	A+PTR	dnsfoa-nextgen.advisorclient.com
198.200.171.198	A+PTR	advisorclient.com
198.200.171.198	A+PTR	www-tx.advisorclient.com
198.200.171.201	A+PTR	dnsfoa-apis.tdameritrade.com
198.200.171.201	A+PTR	tx-apis.tdameritrade.com
198.200.171.201	A	apis-tx.tdameritrade.com
198.200.171.204	A+PTR	www-tx.tdameritrade.com
198.200.171.204	A	ameritrade.com
198.200.171.204	A	ameritradefinancial.com
198.200.171.206	A	mobile-cms-tx.tdameritrade.com
198.200.171.216	A+PTR	www-tx.topsportfolios.com
198.200.171.236	A+PTR	kcmailoutext1.ameritrade.com
198.200.171.237	A+PTR	veoone-tx.tdainstitutional.com
198.200.171.240	A+PTR	dnsfoa-trade.tdameritrade.com
198.200.171.240	A	trade-tx.tdameritrade.com
198.200.171.244	A	www.tradewise.com
198.200.171.250	A	www-tx.advisorservices.com