Robtex

Up: 209.8.126.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 209.8.127.0/25
Down right: 209.8.127.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
209.8.127.0	A	marketus.com
209.8.127.64	A	ns.marketus.com
209.8.127.69	A	ssentry.com
209.8.127.102	PTR	pegasus.marketus.com
209.8.127.102	A	marketus.com
209.8.127.108	A	edge.marketus.com
209.8.127.109	A+PTR	exchange.marketus.com
209.8.127.109	A+PTR	127.8.209.in-addr.arpa
209.8.127.110	A+PTR	mail.marketus.com
209.8.127.111	A+PTR	dc2.marketus.com
209.8.127.111	A	marketus.com
209.8.127.111	A	ns2.marketus.com
209.8.127.120	A	www.marketus.com
209.8.127.150	A	gsamail.info
209.8.127.151	A+PTR	mailblasts.net
209.8.127.160	A	pbx.marketus.com
209.8.127.161	A+PTR	pbx1.marketus.com
209.8.127.162	A+PTR	pbx2.marketus.com
209.8.127.190	PTR	gsadoc.com
209.8.127.190	PTR	gsapriceme.com
209.8.127.190	A+PTR	gsaprime.com
209.8.127.191	A+PTR	webhost.marketus.com
209.8.127.192	A+PTR	gsaprime.com
209.8.127.192	PTR	gsarx.com
209.8.127.192	PTR	www.gsadoc.com