Robtex

Up: 208.90.48.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 208.90.56.0/22
Down right: 208.90.60.0/22

IP	Type	Hostname
208.90.56.152	A+PTR	pnat.vega.ironport.com
208.90.56.212	A	time.sco.cisco.com
208.90.57.13	A	mx1.res.cisco.com
208.90.57.14	A	mx2.res.cisco.com
208.90.57.15	A+PTR	vega.res.cisco.com
208.90.57.16	A+PTR	applet-vega.res.cisco.com
208.90.57.22	A	alpha.res.cisco.com
208.90.57.32	A+PTR	mxnat1.res.cisco.com
208.90.57.73	A+PTR	ibnp.ironport.com
208.90.57.75	A+PTR	wbnp.ironport.com
208.90.57.90	PTR	secure-web.cisco.com
208.90.57.167	A+PTR	dev.res.cisco.com
208.90.57.169	A+PTR	beta.res.cisco.com
208.90.57.170	A+PTR	perf.res.cisco.com
208.90.57.178	A	dev-cres-app-mail.ironport.com
208.90.57.196	PTR	nat-vlan550.las1.sco.cisco.com
208.90.57.203	PTR	smtp1.las1.sco.cisco.com
208.90.57.204	PTR	smtp2.las1.sco.cisco.com
208.90.57.205	PTR	rdns1-nat.vega.ironport.com
208.90.57.206	A+PTR	rdns2-nat.vega.ironport.com
208.90.57.207	A	rdns3-nat.vega.ironport.com
208.90.57.213	A	email-submission.cisco.com
208.90.57.232	A	ftp.ironport.com
208.90.58.5	PTR	update-manifests.ironport.com
208.90.58.5	A	update-manifests.dcs.ironport.com
208.90.58.6	PTR	update-manifests.sco.cisco.com
208.90.58.6	A	updates-talos.dcs.sco.cisco.com
208.90.58.6	A	update-manifests.dcs.sco.cisco.com
208.90.58.19	A+PTR	abnp.ironport.com
208.90.58.21	A	origin-stage-updates.ironport.com
208.90.58.25	A+PTR	origin-updates.ironport.com
208.90.58.25	A	updates-static.dcs.ironport.com
208.90.58.28	A	pdn-ns-vega.sco.cisco.com
208.90.58.29	A	stage-ise.sco.cisco.com
208.90.58.36	A+PTR	adns1.ironport.com
208.90.58.37	A+PTR	adns2.ironport.com
208.90.58.101	A+PTR	jira.sco.cisco.com
208.90.58.105	A+PTR	downloads-static.ironport.com
208.90.58.105	A	origin-downloads-external.ironport.com
208.90.58.105	A	origin-downloads.ironport.com
208.90.58.106	A	securityhub.cisco.com
208.90.58.113	A+PTR	mx3.sco.cisco.com
208.90.58.115	A+PTR	phonehome.senderbase.org
208.90.58.122	A+PTR	mx4.sco.cisco.com
208.90.58.177	A	sandbox.secure-web.harpe-cisco.com.akadns.net
208.90.58.178	PTR	prod-harpe-app-vip.vega.ironport.com
208.90.58.178	A	secure-web.harpe-cisco.com.akadns.net
208.90.58.184	A+PTR	stage.safe-unsubscribe-deimos.sco.cisco.com
208.90.58.184	A	stage.safe-unsubscribe.ncs-cisco.com.akadns.net
208.90.58.189	A+PTR	safe-unsubscribe-deimos.cisco.com
208.90.58.189	A	safe-unsubscribe.cisco.com
208.90.60.19	A+PTR	vega-sbrs-ns1.senderbase.org
208.90.60.20	A+PTR	vega-sbrs-ns2.senderbase.org
208.90.60.21	A+PTR	vega-sbrs-ns3.senderbase.org
208.90.60.22	A+PTR	vega-sbrs-ns4.senderbase.org
208.90.60.24	A+PTR	vega-sbrs-ns6.senderbase.org
208.90.60.25	A+PTR	vega-sb-ns1.senderbase.org
208.90.60.26	A+PTR	vega-sb-ns2.senderbase.org
208.90.60.27	A+PTR	vega-sb-ns3.senderbase.org
208.90.60.32	A+PTR	vega-sb-ns8.senderbase.org
208.90.60.33	A+PTR	vega-sb-ns9.senderbase.org
208.90.60.34	A+PTR	vega-sb-ns10.senderbase.org
208.90.60.35	A+PTR	vega-sb-ns11.senderbase.org
208.90.61.52	A	mx.trudiedo.com
208.90.61.52	A	trudiedo.com
208.90.61.59	A	metapals.com
208.90.61.59	A	mx.metapals.com
208.90.61.196	A	ib2.metacloud.net
208.90.63.203	A	time.sco.cisco.com
208.90.63.203	A	time.ironport.com
208.90.63.204	A	time.sco.cisco.com
208.90.63.204	A	time.ironport.com