Robtex

Up: 72.237.30.0/25
Can't show all results, try to descend to a more specific CIDR
Down left: 72.237.30.64/27
Down right: 72.237.30.96/27
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.237.30.67	PTR	www.navpoint.com
72.237.30.67	A	navpointhosting.com
72.237.30.67	A	navpoint.net
72.237.30.69	PTR	purple.navpoint.com
72.237.30.69	A	radnortrading.com
72.237.30.69	A	liverytimes.com
72.237.30.86	A+PTR	brenmin.navpoint.com