Robtex

Up: 182.71.18.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 182.71.19.0/25
Down right: 182.71.19.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
182.71.19.3	PTR	nsg-static-003.19.71.182.airtel.in
182.71.19.15	PTR	nsg-static-015.19.71.182.airtel.in
182.71.19.26	PTR	nsg-static-026.19.71.182.airtel.in
182.71.19.47	PTR	nsg-static-047.19.71.182.airtel.in
182.71.19.48	PTR	nsg-static-048.19.71.182.airtel.in
182.71.19.107	A	vimacservicedesk.com
182.71.19.125	PTR	nsg-static-125.19.71.182.airtel.in
182.71.19.180	PTR	nsg-static-180.19.71.182.airtel.in
182.71.19.194	PTR	nsg-static-194.19.71.182.airtel.in
182.71.19.251	PTR	nsg-static-251.19.71.182.airtel.in
182.71.19.251	A	bncce.org
182.71.19.251	A	*.shankarainstitute.org