Robtex

Up: 200.152.168.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 200.152.168.0/26
Down right: 200.152.168.64/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
200.152.168.3	A+PTR	bas1-vl-120-1-prd.br1.yahoo.com
200.152.168.4	A+PTR	bas2-vl-120-1-prd.br1.yahoo.com
200.152.168.5	PTR	slb1-vl120-1-prd.br1.yahoo.com
200.152.168.6	PTR	slb2-vl120-1-prd.br1.yahoo.com
200.152.168.7	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.8	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.9	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.10	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.13	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.16	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.17	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.18	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.19	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.24	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.25	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.26	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.27	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.28	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.30	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.31	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.32	A+PTR	over3.br1.yahoo.com
200.152.168.33	A+PTR	over4.br1.yahoo.com
200.152.168.34	PTR	uds000.cl1.uds.br1.yahoo.com
200.152.168.35	PTR	uds001.cl1.uds.br1.yahoo.com
200.152.168.36	PTR	uds000.cl2.uds.br1.yahoo.com
200.152.168.38	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.40	PTR	ups-a5.npn.adx.br1.yahoo.com
200.152.168.41	A+PTR	ups-a6.npn.adx.br1.yahoo.com
200.152.168.43	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.44	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.44	A	ups-a1.npn.adx.br1.yahoo.com
200.152.168.45	PTR	ups-a2.npn.adx.br1.yahoo.com
200.152.168.46	A+PTR	ups-a3.npn.adx.br1.yahoo.com
200.152.168.48	PTR	conf1.npn.adx.br1.yahoo.com
200.152.168.49	PTR	conf2.npn.adx.br1.yahoo.com
200.152.168.50	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.51	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.52	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.53	A+PTR	p8.ard.br1.yahoo.com
200.152.168.54	PTR	p9.ard.br1.yahoo.com
200.152.168.55	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.57	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.58	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.59	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.60	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.61	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.65	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.66	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.67	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.68	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.69	A+PTR	pop3.argus.br1.yahoo.com
200.152.168.71	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.75	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.77	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.78	PTR	dhcmr1.data.br1.yahoo.com
200.152.168.79	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.80	PTR	loadfb1.bkln.br1.yahoo.com
200.152.168.80	A	y-3hbh6mt7ht66q-1333265189000.wc.s1.b.yahoo.com
200.152.168.80	A	y-3uv44mh7s2qgp-1342638901000-c.wc.s1.b.yahoo.com
200.152.168.81	A+PTR	loadfb2.bkln.br1.yahoo.com
200.152.168.81	A	y-3uv44mh7s2qgp-1342638901000-c.wc.s1.b.yahoo.com
200.152.168.81	A	y-3uv44mh7s2qgp-1342638901276-c.wc.s1.b.yahoo.com
200.152.168.82	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.83	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.84	A+PTR	acache1.search.news.vip.br1.yahoo.com
200.152.168.88	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.89	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.91	PTR	yts2.ugc.br1.yahoo.com
200.152.168.92	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.93	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.94	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.95	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.96	A+PTR	ysec1.ops.br1.yahoo.com
200.152.168.97	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.98	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.99	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.100	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.101	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.103	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.104	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.108	A+PTR	guepardo1.ops.br1.yahoo.com
200.152.168.109	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.110	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.111	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.113	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.114	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.115	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.116	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.117	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.119	PTR	pgw2.pers.br1.yahoo.com
200.152.168.121	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.122	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.123	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.124	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.125	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.126	PTR	unknown-200-152-168-x.yahoo.com
200.152.168.127	PTR	unknown-200-152-168-x.yahoo.com