Robtex

Up: 216.49.80.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 216.49.88.0/22
Down right: 216.49.92.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.49.88.2	PTR	sncmsfc-2.mcafee.com
216.49.88.3	PTR	sncmsfc-hsrp.mcafee.com
216.49.88.5	PTR	snclb.netops.mcafee.com
216.49.88.10	PTR	snclbtoo.netops.mcafee.com
216.49.88.12	PTR	www.mcafee.com
216.49.88.12	A	www.mcafeeb2b.com
216.49.88.12	A	mcafee-at-home.com
216.49.88.14	A	scns1.mcafee.com
216.49.88.18	PTR	us.mcafee.com
216.49.88.20	PTR	secure.nai.com
216.49.88.22	A	lannetworksnews.com
216.49.88.31	PTR	download.mcafee.com
216.49.88.40	A	research.mcafee.com
216.49.88.53	PTR	sm.mcafee.com
216.49.88.57	PTR	sm.mcafee.com
216.49.88.58	PTR	custftp.mcafee.com
216.49.88.61	A	origin-sadownload.mcafee.com
216.49.88.85	PTR	sncpcifwa-1.mcafee.com
216.49.88.87	PTR	sncpcifwa-3.mcafee.com
216.49.88.93	A	ebizmail-smtp.mcafee.com
216.49.88.100	PTR	rads.mcafee.com
216.49.88.105	PTR	dss1.siteadvisor.com
216.49.88.110	PTR	msmq.mcafee.com
216.49.88.112	A	mymcafee.fr
216.49.88.115	A+PTR	ebizmail.mcafee.com
216.49.88.115	A	ebizmail-smtp.mcafee.com
216.49.88.116	A	promotions.mcafee.com
216.49.88.120	PTR	securityalerts.mcafee.com
216.49.88.121	PTR	pki.mcafee.com
216.49.88.129	A+PTR	termsvr-sc.mcafee.com
216.49.88.130	PTR	ads.mcafee.com
216.49.88.135	A	oilchange.mcafee.com
216.49.88.138	PTR	map.hackerwatch.org
216.49.88.141	PTR	partnersvc.mcafee.com
216.49.88.142	A	ebizapi.mcafee.com
216.49.88.143	PTR	ftp.nai.com
216.49.88.143	A	ftpdal.nai.com
216.49.88.149	A	partnerftp.mcafee.com
216.49.88.150	PTR	edgescape.mcafee.com
216.49.88.153	A+PTR	s-speedownload.mcafee.com
216.49.88.155	PTR	md5.hackerwatch.org
216.49.88.156	PTR	data.hackerwatch.org
216.49.88.157	PTR	events.hackerwatch.org
216.49.88.158	A	ftp.spamkiller.com
216.49.88.160	A	partnerfiles.mcafee.com
216.49.88.161	PTR	partnerportal.mcafee.com
216.49.88.166	A	cprc.mcafee.com
216.49.88.168	PTR	hackerwatch.org
216.49.88.169	A+PTR	loc.neoworx.com
216.49.88.171	PTR	ebizadmin.mcafee.com
216.49.88.172	A+PTR	supportagents.mcafee.com
216.49.88.173	A	ms.mcafee.com
216.49.88.176	PTR	shop.mcafee.com
216.49.88.177	PTR	cs-smbstore.mcafee.com
216.49.88.179	PTR	ws.mcafee.com
216.49.88.181	A	findapartner.mcafee.com
216.49.88.187	A	forums.mcafee.com
216.49.88.201	A+PTR	tfm.preventsys.com
216.49.89.18	PTR	beta.mcafee.com
216.49.89.99	PTR	au7.mcafee.com
216.49.90.42	PTR	spamrbl.mcafee.com
216.49.90.83	A	admanager3.mcafee.com
216.49.90.84	A	admanager4.mcafee.com
216.49.91.26	PTR	stats.mcafee.com
216.49.92.10	A+PTR	ns0.mcafee.com
216.49.92.11	A+PTR	webking.mcafee.com
216.49.92.31	A	sc-smtpscan2.mcafee.com
216.49.92.31	A	smtpscan2.mcafee.com
216.49.92.32	PTR	relay.mcafee.com
216.49.92.33	A+PTR	smtpscan.mcafee.com
216.49.92.46	A	relaysc.mcafee.com
216.49.92.48	A	accountreports.mcafee.com
216.49.92.99	A+PTR	umail1.mcafee.com
216.49.92.99	A	unity3.mcafee.com
216.49.92.100	A	unity4.mcafee.com
216.49.92.100	A	umail2.mcafee.com
216.49.92.104	A+PTR	umail6.mcafee.com
216.49.92.104	A	unity8.mcafee.com
216.49.92.249	PTR	spamrbl2.mcafee.com
216.49.92.250	PTR	spamrbl.mcafee.com
216.49.93.11	A+PTR	web-bdc1.mcafee.com
216.49.93.30	A	webbackup.mcafee.com
216.49.93.151	A	download.solidcore.com
216.49.93.151	A	ftp.solidcore.com
216.49.93.254	A	dns4.nai.com
216.49.94.10	A	dns-0.mcafee.com
216.49.94.12	PTR	www.mcafee.com
216.49.94.13	A	hackersafes.com
216.49.94.13	A	protectyourtreasures.com
216.49.94.13	A	mcafeesecure.com.br
216.49.94.19	PTR	home.mcafee.com
216.49.94.20	PTR	cs.mcafee.com
216.49.94.27	A	www.safeboot-hp.com
216.49.94.53	A+PTR	dns-a.mcafee.com
216.49.94.53	A	scns1.mcafee.com
216.49.94.99	A	xx.glb.mcafee.com
216.49.94.139	PTR	au.mcafee.com
216.49.94.140	PTR	br.mcafee.com
216.49.94.144	PTR	de.mcafee.com
216.49.94.145	PTR	dk.mcafee.com
216.49.94.145	A	mcafee.dk
216.49.94.146	PTR	es.mcafee.com
216.49.94.147	PTR	fr.mcafee.com
216.49.94.152	PTR	nl.mcafee.com
216.49.94.153	PTR	no.mcafee.com
216.49.94.154	PTR	pl.mcafee.com
216.49.94.155	PTR	pt.mcafee.com
216.49.94.158	A	mcafee.ie
216.49.94.162	PTR	cz.mcafee.com
216.49.94.164	PTR	fi.mcafee.com
216.49.94.166	PTR	cn.mcafee.com