Robtex

Up: 64.47.32.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 64.47.33.0/25
Down right: 64.47.33.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.47.33.11	A	mx.burdinerealty.com
64.47.33.11	A	mxpool.redgap.com
64.47.33.13	PTR	mail.fairway-partners.com
64.47.33.13	A+PTR	zcs.redgap.com
64.47.33.13	A	mail.adlabel.com
64.47.33.25	A	sip.redgap.com
64.47.33.87	A	support.redgap.com
64.47.33.87	A	ftp.redgap.com
64.47.33.98	A	portal.redgap.com
64.47.33.110	A	vm.redgap.com
64.47.33.253	A+PTR	ns1.redgap.com
64.47.33.254	A+PTR	ns2.redgap.com