Robtex

Up: 210.171.80.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 210.171.80.0/22
Down right: 210.171.84.0/22

IP	Type	Hostname
210.171.81.91	PTR	d-210-171-81-091.ftth.katch.ne.jp
210.171.84.211	PTR	d-210-171-84-211.d-cable.katch.ne.jp
210.171.84.214	A	d-210-171-84-214.d-cable.katch.ne.jp
210.171.86.64	PTR	d-210-171-86-064.ftth.katch.ne.jp
210.171.87.21	A	jupiter.dmz.pu-taro.net