Robtex

Up: 120.28.72.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 120.28.72.0/25
Down right: 120.28.72.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
120.28.72.119	A	ns3.dnslabs.org
120.28.72.145	A+PTR	smtp2.bestank.ph
120.28.72.145	A+PTR	webmail.bestank.ph
120.28.72.145	A+PTR	imap2.bestank.ph
120.28.72.228	A	hostmaster.ibis-inc.net
120.28.72.228	A	*.ibis-inc.net
120.28.72.231	PTR	mail.camayacoast.com