Robtex

Up: 66.225.244.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 66.225.244.0/26
Down right: 66.225.244.64/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.225.244.12	PTR	unknown.iad.scnet.net
66.225.244.67	A+PTR	ap5.snth.com
66.225.244.73	A+PTR	mail.snthdata.com
66.225.244.79	PTR	broadcast
66.225.244.82	PTR	unknown.iad.scnet.net
66.225.244.82	A	serverx1.com
66.225.244.82	A	90ok.com