Robtex

Up: 210.68.144.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 210.68.152.0/22
Down right: 210.68.156.0/22
(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
210.68.158.10	PTR	h10-210-68-158.vis.com.tw
210.68.158.16	PTR	h16-210-68-158.vis.com.tw
210.68.158.25	PTR	h25-210-68-158.vis.com.tw
210.68.158.27	PTR	h27-210-68-158.vis.com.tw
210.68.158.32	PTR	h32-210-68-158.vis.com.tw
210.68.158.43	PTR	h43-210-68-158.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
210.68.158.56	PTR	h56-210-68-158.vis.com.tw
210.68.158.80	PTR	h80-210-68-158.vis.com.tw
210.68.158.91	PTR	h91-210-68-158.vis.com.tw
210.68.158.99	PTR	h99-210-68-158.vis.com.tw
210.68.158.104	PTR	h104-210-68-158.vis.com.tw
210.68.158.107	PTR	h107-210-68-158.vis.com.tw
210.68.158.129	PTR	h129-210-68-158.vis.com.tw
210.68.158.139	PTR	h139-210-68-158.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
210.68.158.153	PTR	h153-210-68-158.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
210.68.158.168	PTR	h168-210-68-158.vis.com.tw
210.68.158.170	PTR	h170-210-68-158.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
210.68.158.185	PTR	h185-210-68-158.vis.com.tw
210.68.158.187	PTR	h187-210-68-158.vis.com.tw
210.68.158.193	PTR	h193-210-68-158.vis.com.tw
210.68.158.201	PTR	h201-210-68-158.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