Robtex

Up: 219.71.0.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 219.71.0.0/23
Down right: 219.71.2.0/23

IP	Type	Hostname
219.71.0.0	A+PTR	host-219-71-0-0.dynamic.kbtelecom.net
219.71.0.51	A+PTR	host-219-71-0-51.dynamic.kbtelecom.net
219.71.0.55	A+PTR	host-219-71-0-55.dynamic.kbtelecom.net
219.71.0.154	A+PTR	host-219-71-0-154.dynamic.kbtelecom.net
219.71.0.154	A	219-71-0-154.cable.dynamic.giga.net.tw
219.71.0.248	A+PTR	host-219-71-0-248.dynamic.kbtelecom.net
219.71.1.4	A	host-219-71-1-4.dynamic.kbtelecom.net
219.71.1.7	A+PTR	host-219-71-1-7.dynamic.kbtelecom.net
219.71.1.32	A+PTR	host-219-71-1-32.dynamic.kbtelecom.net
219.71.1.32	A	219-71-1-32.cable.dynamic.giga.net.tw
219.71.1.112	A+PTR	host-219-71-1-112.dynamic.kbtelecom.net
219.71.1.145	A+PTR	host-219-71-1-145.dynamic.kbtelecom.net
219.71.1.179	A+PTR	host-219-71-1-179.dynamic.kbtelecom.net
219.71.1.191	A+PTR	host-219-71-1-191.dynamic.kbtelecom.net
219.71.1.205	A+PTR	host-219-71-1-205.dynamic.kbtelecom.net
219.71.1.239	PTR	host-219-71-1-239.dynamic.kbtelecom.net
219.71.2.7	A+PTR	host-219-71-2-7.dynamic.kbtelecom.net
219.71.2.62	PTR	host-219-71-2-62.dynamic.kbtelecom.net
219.71.3.19	PTR	host-219-71-3-19.dynamic.kbtelecom.net
219.71.3.60	A	host-219-71-3-60.dynamic.kbtelecom.net
219.71.3.88	PTR	host-219-71-3-88.dynamic.kbtelecom.net
219.71.3.237	A+PTR	host-219-71-3-237.dynamic.kbtelecom.net