Robtex

Up: 182.71.24.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 182.71.24.0/25
Down right: 182.71.24.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
182.71.24.98	PTR	nsg-static-098.24.71.182.airtel.in
182.71.24.172	PTR	nsg-static-172.24.71.182.airtel.in
182.71.24.196	PTR	mail.spacetelelink.com
182.71.24.196	A+PTR	mail.spaceteleservices.com
182.71.24.196	PTR	mail.spacetelecom.in
182.71.24.250	PTR	nsg-static-250.24.71.182.airtel.in
182.71.24.250	A	otpc.otpcindia.in