Robtex

Up: 198.7.28.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 198.7.28.0/24
Down right: 198.7.29.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
198.7.28.56	PTR	198-7-28-56.edgecastcdn.net
198.7.29.5	PTR	ns3.edgecastdns.net
198.7.29.5	A	ns3.montrosearts.org
198.7.29.5	A	ns3.freescentedoilcandles.com
198.7.29.6	PTR	ns4.edgecastdns.net
198.7.29.6	A	ns4.gayhelltv.com
198.7.29.6	A	ns4.inc5000apply.com
198.7.29.100	A	ns5.edgecastdns.net