Robtex

Up: 223.31.104.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 223.31.108.0/23
Down right: 223.31.110.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
223.31.108.166	A	mail2.rollick.co.in
223.31.110.197	A	rkgkolkata.com
223.31.111.169	A	nimsbbsr.ac.in
223.31.111.169	A	koustuvgroup.ac.in
223.31.111.169	A	ceb.ac.in
223.31.111.172	A	www.biskidz.org
223.31.111.172	A	www.biskidz.com