Robtex

Up: 202.131.152.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 202.131.156.0/23
Down right: 202.131.158.0/23

IP	Type	Hostname
202.131.156.6	PTR	202.131.156.6.convergentindia.com
202.131.157.79	PTR	202.131.157.79.convergentindia.com
202.131.158.243	A+PTR	jncasr.ac.in
202.131.159.45	PTR	202.131.159.45.convergentindia.com
202.131.159.255	PTR	202.131.159.255.convergentindia.com