Robtex

Up: 202.156.16.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 202.156.16.0/23
Down right: 202.156.18.0/23

IP	Type	Hostname
202.156.16.52	PTR	52.16.156.202.starhub.net.sg
202.156.16.127	PTR	127.16.156.202.starhub.net.sg
202.156.16.127	A	root.dyns.net
202.156.19.169	PTR	169.19.156.202.starhub.net.sg
202.156.19.241	PTR	unknown.maxonline.com.sg
202.156.19.248	PTR	cm248.gamma19.maxonline.com.sg
202.156.19.248	A	kinderbaker.com