Robtex

Up: 182.75.48.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 182.75.48.0/22
Down right: 182.75.52.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
182.75.48.182	PTR	nsg-static-182.48.75.182-airtel.com
182.75.48.182	A	sdnbvc.com
182.75.48.214	PTR	nsg-static-214.48.75.182-airtel.com
182.75.49.86	PTR	nsg-static-86.49.75.182-airtel.com
182.75.49.98	PTR	nsg-static-98.49.75.182-airtel.com
182.75.49.98	A	synchronsrv.com
182.75.49.134	PTR	nsg-static-134.49.75.182-airtel.com
182.75.51.28	A	trainingefficiency.com
182.75.51.139	PTR	nsg-static-139.51.75.182-airtel.com
182.75.51.139	A	html.upupload.com
182.75.51.139	A	html2.upupload.com
182.75.51.140	A+PTR	wp.upupload.com
182.75.51.151	PTR	nsg-static-151.51.75.182-airtel.com
182.75.51.151	A	html0219.upupload.com
182.75.51.154	PTR	nsg-static-154.51.75.182-airtel.com
182.75.51.154	A	html1118.upupload.com
182.75.51.155	PTR	nsg-static-155.51.75.182-airtel.com
182.75.51.155	A	html1119.upupload.com
182.75.51.201	A	maa.mxout.univercell.in
182.75.51.250	PTR	nsg-static-250.51.75.182-airtel.com
182.75.52.110	PTR	nsg-static-110.52.75.182-airtel.com
182.75.53.51	A+PTR	mail.spagroupindia.com
182.75.53.51	A	mail.naks.in
182.75.53.51	A	mail.iniveshak.com
182.75.53.52	PTR	nsg-static-52.53.75.182-airtel.com
182.75.53.54	PTR	nsg-static-54.53.75.182-airtel.com
182.75.53.57	PTR	nsg-static-57.53.75.182-airtel.com
182.75.53.60	PTR	nsg-static-60.53.75.182-airtel.com
182.75.53.60	A	mail.fashionflare.in
182.75.53.60	A	mail.webapps.co.in
182.75.54.54	PTR	nsg-static-54.54.75.182-airtel.com
182.75.54.88	PTR	nsg-static-88.54.75.182-airtel.com
182.75.55.128	A+PTR	mail2.ratanplastics.com