Robtex

Up: 116.50.88.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 116.50.88.0/23
Down right: 116.50.90.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
116.50.90.15	A+PTR	gwhydsmtp020.ril.com
116.50.90.30	A+PTR	gwhydsmtp013.ril.com
116.50.90.31	A+PTR	mx01.da-is.org
116.50.90.32	A+PTR	mta1.gennextventures.com
116.50.90.32	A+PTR	mx03.gennextfund.com
116.50.90.33	A	mx03.jio.com
116.50.90.33	A	mx03.jiolyf.com
116.50.90.36	A	mx02.resq.in
116.50.90.38	A	mx03.relbio.com
116.50.90.39	A	mx03.rfhospital.org
116.50.90.41	A+PTR	mx21.imgreliance.com
116.50.90.41	PTR	mx03.riseworldwide.in
116.50.90.42	PTR	mx02.reliancejio.com
116.50.90.44	A	mx01.rjdspl.com
116.50.90.44	A	mx21.newgenbrands.com
116.50.90.44	A	mx03.dsplmail.com
116.50.90.45	PTR	mx02.jiogst.com
116.50.90.82	A	mx2.jio.com
116.50.90.83	A	mx2.jiomoney.com
116.50.91.40	A	ns3.reliance.in
116.50.91.41	A	ns4.reliance.in