Robtex

Up: 199.242.240.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 199.242.242.0/24
Down right: 199.242.243.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
199.242.242.196	A+PTR	develop.backupdns.com
199.242.242.197	A+PTR	members.backupdns.com
199.242.242.198	PTR	backupdns.com
199.242.242.198	A	backupmx.org
199.242.242.198	A	backupmx.com
199.242.242.199	PTR	ns01.backupdns.com
199.242.242.200	A	packetflux.com
199.242.242.200	A	www.packetflux.com