Robtex

Up: 219.87.72.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 219.87.72.0/23
Down right: 219.87.74.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
219.87.72.1	A+PTR	219-87-72-1.static.tfn.net.tw
219.87.72.1	A	dns.geniusnet.com
219.87.72.1	A	dns.geniusnet.com.tw
219.87.72.2	PTR	219-87-72-2.static.tfn.net.tw
219.87.72.12	PTR	219-87-72-12.static.tfn.net.tw
219.87.72.12	A	ms.agamazone.com
219.87.72.12	A	ms.kyecom.com
219.87.72.14	A+PTR	219-87-72-14.static.tfn.net.tw
219.87.72.14	A	ms.agamazone.com
219.87.72.14	A	ms.kyecom.com
219.87.72.20	PTR	219-87-72-20.static.tfn.net.tw
219.87.72.20	A	tphcs.geniusnet.com
219.87.72.22	A	tphcs2.geniusnet.com
219.87.72.22	A	219-87-72-22.static.tfn.net.tw
219.87.72.38	A+PTR	219-87-72-38.static.tfn.net.tw
219.87.72.101	PTR	219-87-72-101.static.tfn.net.tw
219.87.72.101	A	genius-dc1.geniusnet.com
219.87.72.127	PTR	219-87-72-127.static.tfn.net.tw
219.87.72.128	PTR	219-87-72-128.static.tfn.net.tw
219.87.72.151	PTR	spam1.geniusnet.com.tw
219.87.72.151	A	ms.geniusnet.com
219.87.72.151	A	219-87-72-151.static.tfn.net.tw
219.87.72.185	A+PTR	219-87-72-185.static.tfn.net.tw
219.87.72.197	A+PTR	219-87-72-197.static.tfn.net.tw
219.87.72.197	A	ms.geniusnet.com.tw
219.87.72.197	A	spam1.geniusnet.com.tw
219.87.72.202	A	www.geniusnet.com.tr
219.87.72.208	PTR	219-87-72-208.static.tfn.net.tw
219.87.72.208	A	geniusnet.com
219.87.72.208	A	www.gx-gaming.com
219.87.73.101	PTR	219-87-73-101.static.tfn.net.tw
219.87.73.101	A	www.hnfhc.com.tw
219.87.73.102	A+PTR	219-87-73-102.static.tfn.net.tw
219.87.73.102	A	www.hncb.com.tw
219.87.73.131	PTR	epaper.member.okwap.com
219.87.73.155	PTR	219-87-73-155.static.tfn.net.tw
219.87.73.155	A	dns3.okwap.com
219.87.73.195	A+PTR	219-87-73-195.static.tfn.net.tw
219.87.73.195	A	dns2.tachan.com.tw
219.87.73.199	A+PTR	mail1.tachan.com.tw
219.87.73.200	A+PTR	mail2.tachan.com.tw
219.87.74.1	A+PTR	219-87-74-1.static.tfn.net.tw
219.87.74.226	PTR	ms2.silitech.com
219.87.74.226	A	ms1.silitech.com
219.87.74.242	A+PTR	219-87-74-242.static.tfn.net.tw
219.87.74.242	A	www.silitech.com
219.87.74.242	A	silitech.com
219.87.74.246	A+PTR	219-87-74-246.static.tfn.net.tw
219.87.74.246	A	ms1.silitech.com
219.87.74.250	PTR	219-87-74-250.static.tfn.net.tw
219.87.74.250	A	twtsmsg03.silitech.com
219.87.74.250	A	twtsmsg01.silitech.com
219.87.74.251	A+PTR	219-87-74-251.static.tfn.net.tw
219.87.75.131	A+PTR	219-87-75-131.static.tfn.net.tw
219.87.75.131	A	shop.avon.com.tw