Robtex

Up: 199.38.150.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 199.38.151.0/25
Down right: 199.38.151.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
199.38.151.1	A	novus-optimum.com
199.38.151.1	A	studentdiscovercard.com
199.38.151.1	A	findyouroffers.com
199.38.151.4	A	archertprm.discover.com
199.38.151.4	A	thecard4you.com
199.38.151.4	A	thecardforyou.com
199.38.151.5	A	fisofac.discoverfinancial.com
199.38.151.23	A	discovernetworkorders.com
199.38.151.23	A	discoversignage.net
199.38.151.24	A+PTR	gateway.discover.com
199.38.151.32	A	dhlapi.discover.com
199.38.151.55	A	apistest.discover.com
199.38.151.64	A	discoverannuities.com
199.38.151.64	A	discoverplatinum.com
199.38.151.64	A	discovercardtax.com
199.38.151.66	A	discoverecentralexpress.com
199.38.151.66	A	www.discovermobileoffers.com
199.38.151.66	A	acceptdiscover.ca
199.38.151.72	A	amazonposna.discover.com
199.38.151.72	A	amazonpos.discover.com
199.38.151.85	A	discoveradvancedpayments.com
199.38.151.92	A+PTR	api-na.discover.com
199.38.151.92	A	apigw.discover.com
199.38.151.105	A	api.discover.com
199.38.151.108	A	dciclubcash.com
199.38.151.108	A	dcclubcash.com
199.38.151.108	A	blog.pulsenetwork.com
199.38.151.109	A	www.pix2.org
199.38.151.125	A+PTR	ddapisna.discover.com
199.38.151.125	A	ddapis.discover.com
199.38.151.127	A+PTR	sandboxna.apis.discover.com
199.38.151.127	PTR	sandboxna.discover.com
199.38.151.127	PTR	sandbox.apis.discover.com
199.38.151.142	A	www.dinersclubnetwork.com
199.38.151.153	A	dinersclubinfonet.net
199.38.151.161	A	mktpgmportal.discover.com
199.38.151.161	A	www.mktpgmportal.discover.com
199.38.151.166	A	dfspin.discover.com
199.38.151.171	A	dhlapi8.discover.com
199.38.151.174	A	zinc-msg-notify.discovernetwork.com
199.38.151.174	A	zinc-txn-notify.discovernetwork.com
199.38.151.204	A	freshchat.discover.com
199.38.151.243	A+PTR	ns3.discover.com
199.38.151.244	A+PTR	ns4.discover.com
199.38.151.245	A	ns3.discovercard.com
199.38.151.246	A	ns4.discovercard.com