Robtex

Up: 218.212.0.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 218.212.4.0/23
Down right: 218.212.6.0/23

IP	Type	Hostname
218.212.4.36	A	williamschriss.com
218.212.4.36	A	breakglass.biz
218.212.5.2	PTR	unknown.maxonline.com.sg
218.212.6.2	PTR	unknown.maxonline.com.sg
218.212.7.2	PTR	unknown.maxonline.com.sg
218.212.7.30	A	mountern.com