Robtex

Up: 76.12.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 76.13.0.0/17
Down right: 76.13.128.0/17
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
76.13.0.0	PTR	unknown.yahoo.com
76.13.0.7	A	rsw5-2-flk.bf1.yahoo.com
76.13.0.248	A	bas-c2.ac4.yahoo.com
76.13.1.1	A	lo0.bas1-2-flk.bf1.yahoo.com
76.13.1.175	A	bas-g8.ac4.yahoo.com
76.13.1.189	A	bas2-1-yst.ac4.yahoo.com
76.13.2.0	PTR	unknown-76-13-2-x.yahoo.com
76.13.2.23	A	te-9-3.bas-f2.ac2.yahoo.com
76.13.6.31	A	bs2.ads.vip.ac4.yahoo.com
76.13.6.190	A	fe.secure.del.vip.ac4.yahoo.net
76.13.10.159	A	f6122.mail.vip.ac4.yahoo.com
76.13.10.237	A	f6123.mail.yahoo.com
76.13.10.237	A	f6123.mail.vip.ac4.yahoo.com
76.13.12.108	A	f594.mail.vip.ac4.yahoo.com
76.13.13.1	PTR	unknown-76-13-13-x.yahoo.com
76.13.13.72	A	n2b.bullet.mail.ac4.yahoo.com
76.13.13.75	A	n5b.bullet.mail.ac4.yahoo.com
76.13.13.77	A	n7b.bullet.mail.ac4.yahoo.com
76.13.13.78	A	n1c.bullet.mail.ac4.yahoo.com
76.13.15.1	PTR	unknown-76-13-15-x.yahoo.com
76.13.15.42	A	el111.msg.ac4.yahoo.com
76.13.15.46	A	el115.msg.ac4.yahoo.com
76.13.16.12	A	c4948-b3.ac4.yahoo.com
76.13.16.26	A	c4948-b13.ac4.yahoo.com
76.13.17.5	A	si-b1.vl220.ac4.yahoo.com
76.13.17.7	A	bw21.finance.ac4.yahoo.com
76.13.17.39	A	old.news.yahoo.com
76.13.17.39	A	api.news.yahoo.com
76.13.18.77	A	storage4-dsr.flickr.vip.ac4.yahoo.com
76.13.18.79	A	storage5.flickr.vip.ac4.yahoo.com
76.13.21.33	A	relay2.voice.ac4.yahoo.com
76.13.23.51	A	tax-evasion-bank-fraud.adrevolver.com
76.13.23.51	A	adrevolver.com
76.13.23.51	A	media-adrevolver.bl.vip.ac4.yahoo.net
76.13.26.127	A	sendmailws115.mail.bf1.yahoo.com
76.13.26.136	A	sendmailws131.mail.bf1.yahoo.com
76.13.26.172	A	mg1013.mail.bf1.yahoo.com
76.13.26.237	A	mg1046.mail.bf1.yahoo.com
76.13.27.6	A	sendmailws120.mail.bf1.yahoo.com
76.13.27.34	A	sendmailws127.mail.bf1.yahoo.com
76.13.27.35	A	sendmailws128.mail.bf1.yahoo.com
76.13.27.48	A	sendmailws133.mail.bf1.yahoo.com
76.13.28.0	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.1	A+PTR	ha1.vl-122.usw5-29-pdb.bf1.yahoo.com
76.13.28.3	A	vl-122.usw5-29-pdb.bf1.yahoo.com
76.13.28.4	A	vl-122.usw6-45-pdb.bf1.yahoo.com
76.13.28.7	A	media-router-flurry2.prod.media.wg1.b.yahoo.com
76.13.29.174	A	ws170.progrss.bf1.yahoo.com
76.13.29.176	A	ws101.progrss.bf1.yahoo.com
76.13.29.212	A	bf1-1scheduler-003.adx.bf1.yahoo.com
76.13.30.18	A	bf1-uaddbcx-001.data.bf1.yahoo.com
76.13.30.19	A	bf1-uaddbcx-002.data.bf1.yahoo.com
76.13.31.33	A	aptspare-002.adx.bf1.yahoo.com
76.13.32.42	A	smtp-mob.biz.mail.global.gm0.yahoodns.net
76.13.32.136	A	media-router-apple2.prod.media.vip.bf1.yahoo.com
76.13.32.146	A	spdc.pbp.vip.bf1.yahoo.com
76.13.32.147	A	spcms.pbp.vip.bf1.yahoo.com
76.13.34.6	A	usw2-1-e.yahoo.com
76.13.34.25	A	srv.ysm.vip.ac4.yahoo.com
76.13.34.26	A	cmls.eu.overture.com
76.13.34.26	A	cmls.overture.com
76.13.38.1	PTR	unknown-76-13-38-x.yahoo.com
76.13.43.3	PTR	unknown-76-13-43-x.yahoo.com
76.13.44.3	PTR	unknown-76-13-44-x.yahoo.com
76.13.57.0	PTR	unknown-76-13-57-x.yahoo.com
76.13.62.84	A	a323.yahoofs.a00.yahoodns.net
76.13.62.95	A	a367.yahoofs.com
76.13.62.95	A	a367.yahoofs.a00.yahoodns.net
76.13.63.61	A	fe1.shine.lifestyles.fy11.b.yahoo.com
76.13.68.1	PTR	unknown-76-13-68-x.yahoo.com
76.13.77.1	PTR	unknown-76-13-77-x.yahoo.com
76.13.82.1	PTR	unknown-76-13-82-x.yahoo.com
76.13.95.3	PTR	unknown-76-13-95-x.yahoo.com
76.13.97.207	A	ac4-qaamdb-clu.yahoo.com
76.13.104.30	A	*.yadvertisingblog.com
76.13.105.2	PTR	unknown-76-13-105-x.yahoo.com
76.13.111.2	PTR	unknown-76-13-111-x.yahoo.com
76.13.114.60	A	finance.yahoo.ca
76.13.114.81	A	billing.finance.yahoo.com
76.13.114.81	A	billing.finance.fy7.b.yahoo.com
76.13.114.89	A	ichart1.finance.vip.ac4.yahoo.com
76.13.115.6	A	c41.finance.ac4.yahoo.com
76.13.115.29	A	fe1.preprd.global.media.vip.ac4.yahoo.com
76.13.115.39	A	mtf1.news.ac4.yahoo.com
76.13.115.86	A	sws1.finance.vip.ac4.yahoo.com
76.13.116.38	A	deportes.yahoo.com
76.13.119.0	PTR	unknown-76-13-119-x.yahoo.com
76.13.119.75	A	test.markettracker.finance.yahoo.com
76.13.122.213	A	lrdc1.stage.rel.pool.ac4.yahoo.com
76.13.125.2	PTR	unknown-76-13-125-x.yahoo.com
76.13.126.181	A	redirect1.music.a01.yahoodns.net
76.13.160.3	PTR	unknown-76-13-160-x.yahoo.com
76.13.196.163	A	stgsorryamp.ysm.vip.ac4.yahoo.com
76.13.196.163	A	amp.yahoo.com
76.13.208.251	A	ldap.rm.sp1.yahoo.com
76.13.216.11	A	ad1.rtm-1.vip.rm.ac4.yahoo.com
76.13.219.168	A	mpr3.ngd.vip.ac4.yahoo.com
76.13.220.11	A	ad3.rtm-1.vip.rm.ac4.yahoo.com
76.13.223.200	A	ad1lz2.vip.rm.ac4.yahoo.com
76.13.223.200	A	apt-world.ngd.ysm.yahoodns.net
76.13.230.0	PTR	unknown-76-13-230-x.yahoo.com
76.13.232.32	A	fac1.cl1.ads.adx.vip.ac4.yahoo.com
76.13.232.32	A	fac.apx.yahoodns.net
76.13.234.32	A	fac.apx.yahoodns.net
76.13.234.32	A	fac1.cl2.ads.adx.vip.ac4.yahoo.com
76.13.234.64	A	conf1.npn.adx.vip.ac4.yahoo.com
76.13.234.72	A	temp1.fac.cl2.adx.ac4.yahoo.com
76.13.236.1	PTR	unknown-76-13-236-x.yahoo.com
76.13.241.21	A	srv.ysm.yahoodns.net
76.13.244.0	PTR	lo0.bas1-3-prd.sp2.yahoo.com
76.13.244.0	A	bas1-3-prd.sp2.yahoo.com
76.13.244.9	A	po-11.bas1-3-prd.sp2.yahoo.com
76.13.245.233	A	rsw74-3-prd.sp2.yahoo.com
76.13.246.59	A	whitelist.snp.mobile.yahoo.com
76.13.246.180	A	avqaprodweb01.cc.sp2.yahoo.com
76.13.247.5	A	mad25.mobile.sp2.yahoo.com
76.13.247.40	A	mad60.mobile.sp2.yahoo.com