Robtex

Up: 210.68.152.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 210.68.152.0/23
Down right: 210.68.154.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
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