Robtex

Up: 61.31.206.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 61.31.206.0/25
Down right: 61.31.206.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
61.31.206.1	A	ssjj1.gm99.com
61.31.206.6	PTR	www.books.com.tw
61.31.206.11	PTR	uruzu.books.com.tw
61.31.206.12	PTR	ntc7.books.com.tw
61.31.206.16	PTR	undef.books.com.tw
61.31.206.27	PTR	www.books.com.tw
61.31.206.27	A	tickets.books.com.tw
61.31.206.27	A	im3.gtm.book.com.tw
61.31.206.31	PTR	nopam.books.com.tw
61.31.206.31	A	nopam.book.com.tw
61.31.206.32	A	post.books.com.tw
61.31.206.33	PTR	undef.books.com.tw
61.31.206.34	PTR	addons.books.com.tw
61.31.206.35	PTR	activity.books.com.tw
61.31.206.36	A	search.gtm.books.com.tw
61.31.206.36	A	search.books.com.tw
61.31.206.38	A	db.books.com.tw
61.31.206.42	PTR	tickets.books.com.tw
61.31.206.43	PTR	ei.books.com.tw
61.31.206.45	PTR	myaccount.books.com.tw
61.31.206.48	A+PTR	asatw.books.com.tw
61.31.206.50	A	ntc8.books.com.tw
61.31.206.66	A	mystique.books.com.tw
61.31.206.68	PTR	ntw3.books.com.tw
61.31.206.70	A+PTR	ntw5.books.com.tw
61.31.206.72	PTR	uranus.books.com.tw
61.31.206.77	PTR	undef.books.com.tw
61.31.206.99	A	hebe.books.com.tw
61.31.206.106	PTR	v-font-cache2.books.com.tw
61.31.206.127	PTR	undef.books.com.tw
61.31.206.132	A	newintra.books.com.tw
61.31.206.134	A+PTR	prometheus.books.com.tw
61.31.206.140	PTR	homer.books.com.tw
61.31.206.150	PTR	sati.books.com.tw
61.31.206.153	PTR	www.books.com.tw
61.31.206.154	PTR	undef.books.com.tw
61.31.206.159	A	alcyoneus.books.com.tw
61.31.206.163	PTR	themis.books.com.tw
61.31.206.171	A	amanda.books.com.tw
61.31.206.191	PTR	c29.books.com.tw
61.31.206.192	PTR	mailgw.books.com.tw
61.31.206.195	PTR	undef.books.com.tw
61.31.206.202	A	newservice2.books.com.tw
61.31.206.221	A	ivan.books.com.tw
61.31.206.227	PTR	undef.books.com.tw
61.31.206.233	PTR	www.books.com.tw