Robtex

Up: 116.87.0.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 116.87.0.0/23
Down right: 116.87.2.0/23

IP	Type	Hostname
116.87.1.8	PTR	8.1.87.116.starhub.net.sg
116.87.1.22	PTR	22.1.87.116.starhub.net.sg
116.87.1.26	PTR	26.1.87.116.starhub.net.sg
116.87.1.27	PTR	27.1.87.116.starhub.net.sg
116.87.1.38	PTR	38.1.87.116.starhub.net.sg
116.87.1.40	PTR	40.1.87.116.starhub.net.sg
116.87.1.44	PTR	cm44.zeta1.maxonline.com.sg
116.87.1.52	PTR	52.1.87.116.starhub.net.sg
116.87.3.131	PTR	cm131.zeta3.maxonline.com.sg