Robtex

Up: 222.164.8.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 222.164.12.0/23
Down right: 222.164.14.0/23

IP	Type	Hostname
222.164.12.105	PTR	105.12.164.222.starhub.net.sg
222.164.12.191	PTR	191.12.164.222.starhub.net.sg
222.164.12.228	PTR	228.12.164.222.starhub.net.sg
222.164.14.192	PTR	192.14.164.222.starhub.net.sg
222.164.15.166	PTR	166.15.164.222.starhub.net.sg