Robtex

Up: 58.86.128.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 58.86.128.0/23
Down right: 58.86.130.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
58.86.128.68	PTR	spam.acrosser.com.tw
58.86.128.70	PTR	mail.acrosser.com.tw
58.86.128.71	A+PTR	mail.acrosser.com
58.86.129.22	PTR	58.86-129-host22.kbtelecom.net.tw
58.86.129.23	PTR	58.86-129-host23.kbtelecom.net.tw
58.86.129.41	PTR	58.86-129-host41.kbtelecom.net.tw
58.86.129.42	PTR	58.86-129-host42.kbtelecom.net.tw
58.86.129.129	PTR	58.86-129-host129.kbtelecom.net.tw
58.86.129.130	A+PTR	ebill.card.ubot.com.tw
58.86.129.133	PTR	card.ubot.com.tw
58.86.129.134	PTR	58.86-129-host134.kbtelecom.net.tw
58.86.129.137	A	edm.uitc.com.tw
58.86.129.137	A	ms1.edm.uitc.com.tw
58.86.129.144	PTR	58.86-129-host144.kbtelecom.net.tw
58.86.129.145	PTR	58.86-129-host145.kbtelecom.net.tw
58.86.129.145	A	www.ubot.com.tw
58.86.129.147	PTR	as3.uitc.com.tw
58.86.129.147	A+PTR	as3.cards.ubot.com.tw
58.86.129.147	A	as3.ubi.com.tw
58.86.129.148	A+PTR	mail1.yesemail.com.tw
58.86.129.148	A	yesemail.com.tw
58.86.129.150	PTR	mail3.yesemail.com.tw
58.86.129.150	A	papafresh.com.tw
58.86.129.150	A	www.papafresh.com.tw
58.86.129.152	PTR	58.86-129-host152.kbtelecom.net.tw
58.86.129.152	A	ubot.com.tw
58.86.129.154	PTR	58.86-129-host154.kbtelecom.net.tw
58.86.129.154	A	yesgogo.com.tw
58.86.129.154	A	yesgogogo.com.tw
58.86.129.159	PTR	58.86-129-host159.kbtelecom.net.tw
58.86.129.159	A	twt.com.tw
58.86.129.160	PTR	58.86-129-host160.kbtelecom.net.tw
58.86.129.160	A	www.tmovies.com.tw
58.86.129.160	A	tmovie.com.tw
58.86.129.161	PTR	58.86-129-host161.kbtelecom.net.tw
58.86.129.162	PTR	58.86-129-host162.kbtelecom.net.tw
58.86.129.167	PTR	58.86-129-host167.kbtelecom.net.tw
58.86.129.167	A	uitc.com.tw
58.86.129.167	A	www.uitc.com.tw
58.86.129.173	PTR	58.86-129-host173.kbtelecom.net.tw
58.86.129.173	A	dnsr2.uitc.com.tw
58.86.129.173	A	ns2.www.ubot.com.tw
58.86.129.174	PTR	58.86-129-host174.kbtelecom.net.tw
58.86.129.185	PTR	58.86-129-host185.kbtelecom.net.tw
58.86.129.185	A	ubot.org.tw
58.86.129.185	A	www.ubot.org.tw
58.86.129.186	PTR	58.86-129-host186.kbtelecom.net.tw
58.86.129.186	A	www.uflc.com.tw
58.86.129.253	A	dnsr6.uitc.com.tw
58.86.130.12	PTR	58.86-130-host12.kbtelecom.net.tw
58.86.130.12	A	dns030.net
58.86.130.133	PTR	dns.gtv.com.tw
58.86.130.134	PTR	58.86-130-host134.kbtelecom.net.tw
58.86.130.138	PTR	spam.gtv.com.tw
58.86.130.143	A	gtvevs.gtv.com.tw
58.86.130.147	PTR	58-86-130-host147.static.kbtelecom.net.tw
58.86.130.150	PTR	58.86-130-host150.kbtelecom.net.tw
58.86.130.153	A	gtv05.gtv.com.tw
58.86.130.154	A	media.gtv.com.tw
58.86.130.159	PTR	58.86-130-host159.kbtelecom.net.tw
58.86.130.159	A	ums.gtv.com.tw
58.86.131.65	PTR	58.86-131-host65.kbtelecom.net.tw