Robtex

Up: 122.180.192.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 122.180.196.0/23
Down right: 122.180.198.0/23

IP	Type	Hostname
122.180.197.8	PTR	abts-north-dynamic-8.197.180.122.airtelbroadband.in
122.180.197.64	PTR	nsg-corporate-064.197.180.122.airtel.in
122.180.197.226	PTR	nsg-corporate-226.197.180.122.airtel.in
122.180.198.138	PTR	nsg-corporate-138.198.180.122.airtel.in