Robtex

Up: 210.68.128.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 210.68.144.0/21
Down right: 210.68.152.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
210.68.144.4	PTR	210-68-144-4.static.seed.net.tw
210.68.144.4	A	auth.lineage2.com.tw
210.68.146.234	A	www.e-tribe.org.tw
210.68.146.234	A	www.letchildrenbe.org
210.68.146.234	A	234.210-68-146.doubleservice.com
210.68.146.235	PTR	235.210-68-146.doubleservice.com
210.68.146.236	PTR	236.210-68-146.doubleservice.com
210.68.146.237	PTR	237.210-68-146.doubleservice.com
210.68.147.161	PTR	h161-210-68-147.seed.net.tw
210.68.147.161	A	210-68-147-161.adsl.dynamic.seed.net.tw
210.68.147.161	A	hs.spil.com.tw
210.68.148.131	PTR	210-68-148-131.static.seed.net.tw
210.68.149.4	A	a1.cnamecdn04.xyz
210.68.150.195	PTR	h195-210-68-150.seed.net.tw
210.68.151.18	PTR	h18-210-68-151.seed.net.tw
210.68.151.32	PTR	h32-210-68-151.seed.net.tw
210.68.151.80	PTR	h80-210-68-151.seed.net.tw
210.68.151.128	PTR	h128-210-68-151.seed.net.tw
210.68.151.145	PTR	h145-210-68-151.seed.net.tw
210.68.151.194	PTR	h194-210-68-151.seed.net.tw
210.68.151.240	PTR	h240-210-68-151.seed.net.tw
210.68.153.220	A+PTR	sip220.vis.com.tw
210.68.153.220	A	mx.vis.com.tw
210.68.153.220	A	nsvip2.vis.com.tw
210.68.154.1	A+PTR	dns.vis.com.tw
210.68.154.1	A	mail.vis.com.tw
210.68.154.20	A+PTR	ftp.vis.com.tw
210.68.154.20	A	dns1.vis.com.tw
210.68.154.40	A+PTR	spamsqr1.vis.com.tw
210.68.154.40	A	vis.com.tw
210.68.154.201	A	dns2.vis.com.tw
210.68.158.16	PTR	h16-210-68-158.vis.com.tw
210.68.158.32	PTR	h32-210-68-158.vis.com.tw
210.68.158.48	PTR	h48-210-68-158.vis.com.tw
210.68.158.50	PTR	h50-210-68-158.vis.com.tw
210.68.158.80	PTR	h80-210-68-158.vis.com.tw
210.68.158.99	PTR	h99-210-68-158.vis.com.tw
210.68.158.129	PTR	h129-210-68-158.vis.com.tw
210.68.158.144	PTR	h144-210-68-158.vis.com.tw
210.68.158.145	PTR	h145-210-68-158.vis.com.tw
210.68.158.146	PTR	h146-210-68-158.vis.com.tw
210.68.158.161	PTR	h161-210-68-158.vis.com.tw
210.68.158.162	PTR	h162-210-68-158.vis.com.tw
210.68.158.176	PTR	h176-210-68-158.vis.com.tw
210.68.158.177	PTR	h177-210-68-158.vis.com.tw
210.68.158.193	PTR	h193-210-68-158.vis.com.tw
210.68.158.226	PTR	h226-210-68-158.vis.com.tw
210.68.159.255	PTR	h255-210-68-159.vis.com.tw