Robtex

Up: 220.227.160.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 220.227.168.0/22
Down right: 220.227.172.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
220.227.168.98	PTR	ns1.planet4domain.com
220.227.168.98	PTR	ns2.planet4domain.com
220.227.170.133	PTR	napino.com
220.227.170.134	A	napino.co.in
220.227.170.134	A	mail2.napino.co.in
220.227.170.134	A	mail.napino.co
220.227.171.66	A	mail.atulaya.com
220.227.171.85	PTR	exchange.microclinic.in
220.227.171.85	PTR	exchange.microclinic.net
220.227.171.99	PTR	amarchand.com
220.227.171.100	PTR	amarchand.com
220.227.171.100	A	delsmtp.amarchand.com
220.227.171.155	A	mail.jindalshipyards.com
220.227.171.155	A	mail.jindalwaterways.com
220.227.171.158	PTR	gateway.jindalwater.com
220.227.171.158	A	gateway.jindalwaterways.com
220.227.171.185	A	pti.in
220.227.172.19	A	usemiracle.com
220.227.172.117	A	imanagerapps.com
220.227.173.150	PTR	mail.in.firstrain.com
220.227.173.227	PTR	mail.idrc.org.in
220.227.173.227	A+PTR	saroms03.idrc.org.in
220.227.173.227	A	idrc.org.in
220.227.173.234	A	ns1.idrc.org.in
220.227.173.235	A	smtp.idrc.org.in
220.227.174.92	PTR	mx2.eis-india.com
220.227.174.92	PTR	mx2.mku.com
220.227.174.92	PTR	mx2.arp.org.in