Robtex

Up: 114.110.32.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 114.110.48.0/21
Down right: 114.110.56.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
114.110.51.49	PTR	dns560.mail.kks.yahoo.co.jp
114.110.51.192	PTR	bf2.blog.vip.kks.yahoo.co.jp
114.110.51.192	A	m.blogs.yahoo.co.jp
114.110.51.193	A	m.blogs.yahoo.co.jp
114.110.51.219	A	img.travel.yahoo.co.jp
114.110.51.219	A	img.travel.g.yahoo.co.jp
114.110.51.223	A	shopping.g.yahoo.co.jp
114.110.51.223	A	ats04.shop.vip.kks.yahoo.co.jp
114.110.51.226	A	video.search.yahoo.co.jp
114.110.51.227	PTR	fe003.osp.vip.kks.yahoo.co.jp
114.110.51.227	A	video.search.yahoo.co.jp
114.110.51.227	A	category.auctions.yahoo.co.jp
114.110.51.229	PTR	dl201.downloads.vip.kks.yahoo.co.jp
114.110.52.11	PTR	adsvr246.ads.kks.yahoo.co.jp
114.110.55.169	PTR	csfe01.search.vip.kks.yahoo.co.jp
114.110.55.169	A	custom.search.yahoo.co.jp
114.110.55.196	PTR	bf4.blog.vip.kks.yahoo.co.jp
114.110.55.196	A	m.blogs.yahoo.co.jp
114.110.55.197	A	m.blogs.yahoo.co.jp
114.110.55.233	A	ord.g.yahoo.co.jp
114.110.55.234	A	video.search.yahoo.co.jp
114.110.55.234	A	category.auctions.yahoo.co.jp
114.110.55.249	A	crd.auctions.yahoo.co.jp
114.110.59.220	A	accountlink.g.yahoo.co.jp
114.110.59.220	A	accountlink.yahoo.co.jp
114.110.59.249	A	jp.mg5.mail.yahoo.co.jp
114.110.59.249	A	mg5.mail.yahoo.co.jp
114.110.59.249	A	jp.mg4.mail.yahoo.co.jp
114.110.60.102	A	talk103.ytalk.kks.yahoo.co.jp
114.110.60.105	A	step102.ytalk.kks.yahoo.co.jp
114.110.60.124	A	talk101.ytalk.vip.kks.yahooapis.jp
114.110.61.250	A	f1035.internal.mail.yahoo.co.jp
114.110.61.251	A	f1034.internal.mail.yahoo.co.jp
114.110.61.252	A	f1033.internal.mail.yahoo.co.jp
114.110.63.12	A	zim102.cal.kks.yahoo.co.jp
114.110.63.13	A	zim103.cal.kks.yahoo.co.jp
114.110.63.15	A	zim105.cal.kks.yahoo.co.jp