Robtex

Up: 98.139.21.0/24
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Down left: 98.139.21.0/26
Down right: 98.139.21.64/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
98.139.21.0	PTR	unknown-98-139-21-x.yahoo.com
98.139.21.1	A+PTR	ha1.po-20.bas-2-cld.bf1.yahoo.com
98.139.21.1	A	bahamasgiveaways.net
98.139.21.1	A	tropicalvaca.net
98.139.21.16	A+PTR	fe1.l3.sports.vip.bf1.yahoo.com
98.139.21.18	A+PTR	ws1.yoscs.vip.bf1.yahoo.com
98.139.21.18	A	credstore.g01.yahoodns.net
98.139.21.31	A+PTR	fe.syc.search.vip.bf1.yahoo.com
98.139.21.31	A	fo-us2.production.mh.web.ysta1.b.yahoo.com
98.139.21.45	PTR	unknown-98-139-21-x.yahoo.com
98.139.21.45	A	pxe-farm6.static.flickr.a00.yahoodns.net
98.139.21.45	A	storage6-l3.flickr.vip.bf1.yahoo.com
98.139.21.52	PTR	mscache1.grp.vip.bf1.yahoo.com
98.139.21.52	A	any-media.groups.a03.yahoodns.net
98.139.21.52	A	media.groups.g03.yahoodns.net
98.139.21.56	A+PTR	aptui51.adx.vip.bf1.yahoo.com
98.139.21.57	PTR	aptuiauth.adx.vip.bf1.yahoo.com
98.139.21.57	A	apt1.login.gapx.yahoodns.net
98.139.21.67	A	sdarla.a03.yahoodns.net
98.139.21.75	A+PTR	ads.adx.vip.bf1.yahoo.com
98.139.21.77	PTR	unknown.yahoo.com
98.139.21.77	A	img.sports.yahoo.com
98.139.21.77	A	real.gs.sports.a03.yahoodns.net
98.139.21.86	A	wiki.cloudparty.com
98.139.21.86	A	a.cloudparty.com
98.139.21.86	A	forums.cloudparty.com
98.139.21.95	PTR	unknown-98-139-21-x.yahoo.com
98.139.21.96	PTR	unknown-98-139-21-x.yahoo.com
98.139.21.100	PTR	api.ngd.vip.bf1.yahoo.com
98.139.21.101	A	api-test.yieldmanager.com
98.139.21.103	PTR	my.ngd.vip.bf1.yahoo.com
98.139.21.103	A	ym.adstract.com
98.139.21.103	A	my.xtendmedia.com
98.139.21.107	PTR	beta.ngd.vip.bf1.yahoo.com
98.139.21.107	A	beta.yieldmanager.com
98.139.21.109	PTR	kaproxy.answers.vip.bf1.yahoo.com
98.139.21.109	A	answers.yahoo.com.ph
98.139.21.109	A	api.answers.yahoo.com