Robtex

Up: 203.120.64.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.120.64.0/23
Down right: 203.120.66.0/23

IP	Type	Hostname
203.120.64.2	PTR	cat29-rfc-e4.pacific.net.sg
203.120.64.20	PTR	stargate.sembcorp.com.sg
203.120.64.161	PTR	sgnet-203-120-64-161.pacificinternet.com
203.120.66.21	PTR	www.singaporechess.org.sg
203.120.66.24	PTR	www.asialife.com.sg
203.120.66.29	PTR	www.bonia.com.sg
203.120.66.37	PTR	www.denmark.com.sg
203.120.66.44	PTR	www.epson.com.sg
203.120.66.58	PTR	www.citycab.com.sg
203.120.66.132	PTR	www.ccf.org.sg
203.120.66.140	PTR	www.hongkongcrystal.com
203.120.66.146	PTR	www.saab.com.sg
203.120.66.187	PTR	www.jas.org.sg
203.120.66.204	PTR	www.sec.org.sg
203.120.66.208	PTR	www.xynapse.biz