Robtex

Up: 223.31.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 223.31.0.0/21
Down right: 223.31.8.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
223.31.1.12	A	elearning.hdfcbank.com
223.31.1.16	A	barodanetacademy.co.in
223.31.1.24	A+PTR	mailgw1.iftas.net
223.31.1.27	A	www.rebit.org.in
223.31.1.45	A	iftas.net
223.31.1.69	PTR	223-30-0-0.lan.sify.net
223.31.1.69	A	ns1.idrbt.ac.in
223.31.1.70	A+PTR	mailhub2.idrbt.ac.in
223.31.1.71	A	www.idrbt.ac.in
223.31.1.71	A	idrbt.ac.in
223.31.1.78	A	mailhub1.idrbt.ac.in
223.31.1.81	A+PTR	mailhub2.idrbt.ac.in
223.31.1.86	A+PTR	mailhub1.idrbt.ac.in
223.31.1.225	A	mail.aquarelleindia.com
223.31.3.37	A	ibaspro.in
223.31.3.39	A	schits.com
223.31.3.60	A	shriramway.in
223.31.3.63	A	shriramhousing.in
223.31.3.63	A	cancarefoundation.com
223.31.3.65	A	shriramcity.com
223.31.3.65	A	www.shriramcity.com
223.31.3.66	A	agrigoldauction.com
223.31.3.93	A	shriramlife.in
223.31.3.93	A	www.shriramlife.in
223.31.3.94	A	bharatre.in
223.31.3.95	A	www.shriramlife.com
223.31.3.109	A	shriramgi.co.in
223.31.3.118	A	shriramgeneral.in
223.31.3.124	A	shriramgi.com
223.31.3.124	A	www.shriramgi.com
223.31.4.5	A	webmail.transpolegroup.net
223.31.4.5	A	transpolegroup.net
223.31.4.5	A	mail.transpolegroup.net
223.31.5.107	A+PTR	mail3.pnb.co.in
223.31.5.108	A	mail2.pnb.co.in
223.31.5.114	PTR	mail.psbedi.com
223.31.5.114	A	mail.psblogistics.com
223.31.5.114	A	mail.shotam.com
223.31.6.92	A	onlineexams.co
223.31.9.18	A	youclouddemo.com
223.31.11.178	A	zestaromasportal.com
223.31.12.102	PTR	mail.gservices-it.com
223.31.12.102	A+PTR	mail.zoomtelecom.co.uk
223.31.12.102	A+PTR	mail.milleniumtalk.com