Robtex

Up: 210.24.0.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 210.24.8.0/22
Down right: 210.24.12.0/22

IP	Type	Hostname
210.24.8.165	A	sgsmtp.planetone-asia.com
210.24.8.165	A	sgsmtp.planet1world.com
210.24.8.167	A	ns1.planetone-asia.com
210.24.8.167	A	planet1world.com
210.24.8.177	PTR	sgmail.planet1world.com
210.24.8.177	A	sg3ddc5.planetone-asia.com
210.24.8.178	A+PTR	sg3dmail.planet1world.com
210.24.8.178	A+PTR	sg3dmail.planetone-asia.com
210.24.15.163	PTR	mailsvr1.nutek-sg.com
210.24.15.163	A	nutek-sg.com