Robtex

Up: 204.15.240.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 204.15.244.0/23
Down right: 204.15.246.0/23

IP	Type	Hostname
204.15.244.7	A	load2.aetv.com
204.15.244.8	A	load3.aetv.com
204.15.244.9	A	load4.aetv.com
204.15.244.10	A	load5.aetv.com
204.15.244.11	A	ns.aetv.com
204.15.244.135	PTR	www.aetv.com
204.15.244.136	PTR	www.biography.com
204.15.244.137	PTR	www.history.com
204.15.244.162	PTR	email.aetv.com
204.15.244.163	PTR	email2.aetv.com
204.15.244.203	PTR	antispamdr.aetvn.com