Robtex

Up: 74.6.140.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 74.6.142.0/24
Down right: 74.6.143.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
74.6.142.10	PTR	unknown-74-6-142-x.yahoo.com
74.6.142.14	PTR	unknown-74-6-142-x.yahoo.com
74.6.142.15	PTR	unknown-74-6-142-x.yahoo.com
74.6.142.32	PTR	vespa-rtc0111.shop.vis.sk1.yahoo.com
74.6.142.50	A	vespa-rtc0129.shop.vis.sk1.yahoo.com
74.6.142.52	A	vespa-rtc0131.shop.vis.sk1.yahoo.com
74.6.142.61	PTR	unknown-74-6-142-x.yahoo.com
74.6.142.64	PTR	prd.gossip.search.vip.sk1.yahoo.com
74.6.142.73	PTR	unknown-74-6-142-x.yahoo.com
74.6.142.77	PTR	unknown-74-6-142-x.yahoo.com
74.6.142.100	PTR	unknown-74-6-142-x.yahoo.com
74.6.142.112	A	inv17.2n.q4.inv.search.sk1.yahoo.com
74.6.142.113	A	inv18.2n.q4.inv.search.sk1.yahoo.com
74.6.142.116	PTR	unknown-74-6-142-x.yahoo.com
74.6.142.116	A	inv21.2n.q4.inv.search.sk1.yahoo.com
74.6.142.161	A+PTR	inv02.2p.q4.inv.search.sk1.yahoo.com
74.6.142.164	PTR	unknown-74-6-142-x.yahoo.com
74.6.142.166	PTR	unknown-74-6-142-x.yahoo.com
74.6.142.166	A	inv07.2p.q4.inv.search.sk1.yahoo.com
74.6.142.167	PTR	unknown-74-6-142-x.yahoo.com
74.6.142.170	A	inv11.2p.q4.inv.search.sk1.yahoo.com
74.6.142.189	PTR	inv30.2p.q4.inv.search.sk1.yahoo.com
74.6.142.198	PTR	unknown-74-6-142-x.yahoo.com
74.6.142.202	PTR	unknown-74-6-142-x.yahoo.com
74.6.142.215	PTR	unknown-74-6-142-x.yahoo.com
74.6.142.242	PTR	unknown-74-6-142-x.yahoo.com
74.6.143.6	PTR	unknown-74-6-143-x.yahoo.com
74.6.143.8	PTR	unknown.yahoo.com
74.6.143.8	A	media-router-flurry2.prod.media.vip.bf1.yahoo.com
74.6.143.10	PTR	unknown.yahoo.com
74.6.143.10	A	ycpproxy-ingress.psi.vip.bf1.yahoo.com
74.6.143.11	A	ui-ingress.psi.vip.bf1.yahoo.com
74.6.143.14	PTR	unknown-74-6-143-x.yahoo.com
74.6.143.14	A	mpr2.ngd.vip.bf1.yahoo.com
74.6.143.18	PTR	unknown-74-6-143-x.yahoo.com
74.6.143.18	A	yho.com
74.6.143.18	A	yahoo.co.uk
74.6.143.19	PTR	unknown-74-6-143-x.yahoo.com
74.6.143.21	PTR	unknown-74-6-143-x.yahoo.com
74.6.143.22	PTR	media-router-api71.prod.media.vip.bf1.yahoo.com
74.6.143.22	A	ncp-gw-sports.g03.yahoodns.net
74.6.143.25	PTR	media-router-fp73.prod.media.vip.bf1.yahoo.com
74.6.143.25	A	yahoo.com
74.6.143.25	A	atsv2-fp.wg1.b.yahoo.com
74.6.143.26	PTR	media-router-fp74.prod.media.vip.bf1.yahoo.com
74.6.143.26	A	yahoo.com
74.6.143.26	A	atsv2-fp.wg1.b.yahoo.com
74.6.143.27	PTR	unknown-74-6-143-x.yahoo.com
74.6.143.28	A+PTR	vespa-feeder7.shop.vis.sk1.yahoo.com
74.6.143.38	PTR	vespa-rtc0071.shop.vis.sk1.yahoo.com
74.6.143.62	PTR	unknown-74-6-143-x.yahoo.com
74.6.143.66	PTR	unknown.yahoo.com
74.6.143.66	A	vespa-rtc0003.shop.vis.sk1.yahoo.com
74.6.143.71	A	vespa-rtc0008.shop.vis.sk1.yahoo.com
74.6.143.77	PTR	unknown-74-6-143-x.yahoo.com
74.6.143.83	PTR	vespa-rtc0020.shop.vis.sk1.yahoo.com
74.6.143.96	PTR	unknown-74-6-143-x.yahoo.com
74.6.143.99	PTR	unknown-74-6-143-x.yahoo.com
74.6.143.102	A+PTR	vespa-rtc0039.shop.vis.sk1.yahoo.com
74.6.143.110	PTR	vespa-rtc0047.shop.vis.sk1.yahoo.com
74.6.143.140	A+PTR	vespa-rtc0105.shop.vis.sk1.yahoo.com
74.6.143.143	PTR	unknown.yahoo.com
74.6.143.172	PTR	unknown-74-6-143-x.yahoo.com
74.6.143.193	PTR	unknown.yahoo.com
74.6.143.226	PTR	unknown-74-6-143-x.yahoo.com