Robtex

Up: 199.19.240.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 199.19.248.0/22
Down right: 199.19.252.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
199.19.248.164	A	one-us-perf.geodns.net.threatpulse.net.akadns.net
199.19.248.164	A	one-row-perf.geodns.net.threatpulse.net.akadns.net
199.19.249.201	A	sp.geo.es.bluecoat.com
199.19.249.201	A	sp.eu.es.bluecoat.com
199.19.249.203	A	sp.geo.es.bluecoat.com
199.19.249.203	A	sp.eu.es.bluecoat.com
199.19.249.203	A	sp.sa.es.bluecoat.com
199.19.249.208	A	av-download.eu.es.bluecoat.com
199.19.249.208	A	av-download.geo.es.bluecoat.com
199.19.249.208	A	av-download.cwfservice.net
199.19.249.220	A	ns.eu.cwfservice.net
199.19.249.220	A	ns.uk.es.bluecoat.com
199.19.249.222	A	ns-uk1.geo.es.bluecoat.com
199.19.250.164	A	one-us-perf.geodns.net.threatpulse.net.akadns.net
199.19.250.164	A	one-row-perf.geodns.net.threatpulse.net.akadns.net
199.19.250.164	A	client.threatpulse.net
199.19.250.192	A+PTR	portal.threatpulse.com
199.19.250.192	A	portal.threatpulse.net
199.19.250.192	A	www.threatpulse.com
199.19.250.193	PTR	auth.threatpulse.com
199.19.250.196	PTR	mailout01.cp1-dc5.threatpulse.com
199.19.250.196	A	spf.bluecoat.com
199.19.250.200	A	att-wl.threatpulse.com
199.19.250.200	A	cloudwebsecurity.att.com
199.19.250.201	PTR	mail-relay-dc5.threatpulse.com
199.19.250.201	A	spf.bluecoat.com
199.19.250.203	A	ctc.threatpulse.com
199.19.251.164	A	one-us-perf.geodns.net.threatpulse.net.akadns.net
199.19.251.164	A	ua-us-perf.geodns.net.threatpulse.net.akadns.net
199.19.254.108	A	mail.advancedmailsecurity.com
199.19.254.231	A	portal.bluecoatcloud.com
199.19.255.228	A+PTR	noc-out.bluecoatcloud.com