Robtex

Up: 219.71.64.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 219.71.68.0/23
Down right: 219.71.70.0/23

IP	Type	Hostname
219.71.68.129	A	host-219-71-68-129.dynamic.kbtelecom.net
219.71.69.68	A+PTR	host-219-71-69-68.dynamic.kbtelecom.net
219.71.69.215	PTR	host-219-71-69-215.dynamic.kbtelecom.net
219.71.69.231	A	219-71-69-231.cable.dynamic.giga.net.tw
219.71.69.235	PTR	host-219-71-69-235.dynamic.kbtelecom.net
219.71.70.53	A+PTR	host-219-71-70-53.dynamic.kbtelecom.net
219.71.70.120	A+PTR	host-219-71-70-120.dynamic.kbtelecom.net
219.71.70.190	A+PTR	host-219-71-70-190.dynamic.kbtelecom.net
219.71.70.198	PTR	host-219-71-70-198.dynamic.kbtelecom.net
219.71.71.12	A+PTR	host-219-71-71-12.dynamic.kbtelecom.net
219.71.71.89	A+PTR	host-219-71-71-89.dynamic.kbtelecom.net