Robtex

Up: 122.146.248.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 122.146.252.0/23
Down right: 122.146.254.0/23

IP	Type	Hostname
122.146.252.102	PTR	122-146-252-102.adsl.static.sparqnet.net
122.146.254.196	PTR	mx.apes.com.tw
122.146.254.196	PTR	tps1.apes.com.tw
122.146.254.196	PTR	www.apes.com.tw
122.146.255.219	PTR	122-146-255-219.adsl.static.sparqnet.net