Robtex

Up: 182.72.2.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 182.72.3.0/25
Down right: 182.72.3.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
182.72.3.10	PTR	nsg-static-010.3.72.182.airtel.in
182.72.3.10	A	mx4.askinvestmentmanagers.com
182.72.3.10	A	mx4.askfinancials.com
182.72.3.11	PTR	nsg-static-011.3.72.182.airtel.in
182.72.3.13	PTR	nsg-static-013.3.72.182.airtel.in
182.72.3.31	PTR	nsg-static-031.3.72.182.airtel.in
182.72.3.42	PTR	mscindia.in
182.72.3.42	PTR	inddom02.com
182.72.3.42	PTR	mscindia.com
182.72.3.48	PTR	nsg-static-048.3.72.182.airtel.in
182.72.3.50	A	kruplmail.rahejauniversal.com
182.72.3.51	A	webmail.krahejauniversal.com
182.72.3.52	A	mail1.krahejauniversal.com
182.72.3.52	A	mymail.rahejauniversal.com
182.72.3.52	A	mail1.krahejaindia.com
182.72.3.53	PTR	nsg-static-053.3.72.182.airtel.in
182.72.3.77	PTR	nsg-static-077.3.72.182.airtel.in
182.72.3.84	PTR	nsg-static-084.3.72.182.airtel.in
182.72.3.90	PTR	nsg-static-090.3.72.182.airtel.in
182.72.3.91	PTR	nsg-static-091.3.72.182.airtel.in
182.72.3.114	PTR	nsg-static-114.3.72.182.airtel.in
182.72.3.117	PTR	nsg-static-117.3.72.182.airtel.in
182.72.3.119	PTR	nsg-static-119.3.72.182.airtel.in
182.72.3.128	PTR	nsg-static-128.3.72.182.airtel.in
182.72.3.149	PTR	nsg-static-149.3.72.182.airtel.in
182.72.3.162	PTR	mail1.halomediaworks.com
182.72.3.162	PTR	halomediaworks.com
182.72.3.162	PTR	mail.jaincotech.com
182.72.3.165	A	mail5.proimageeditors.co.uk
182.72.3.169	PTR	nsg-static-169.3.72.182.airtel.in
182.72.3.187	PTR	nsg-static-187.3.72.182.airtel.in
182.72.3.235	PTR	nsg-static-235.3.72.182.airtel.in
182.72.3.247	A	mail.indeus.in