Robtex

Up: 203.126.204.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 203.126.206.0/24
Down right: 203.126.207.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.126.207.20	A+PTR	mx1.allamanda.com
203.126.207.20	A+PTR	mx1.angsana.com
203.126.207.20	PTR	mx1.banyantree.com
203.126.207.21	PTR	mx2.allamanda.com
203.126.207.21	PTR	mx2.angsana.com
203.126.207.21	PTR	mx2.banyantree.com
203.126.207.22	A	apmail.banyantree.com
203.126.207.37	A	crm.banyantree.com