Robtex

Up: 74.6.52.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 74.6.52.0/25
Down right: 74.6.52.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
74.6.52.4	PTR	vl-132.bas2-7-prd.bf1.yahoo.com
74.6.52.11	A+PTR	mgrats2.geo.vip.gq1.yahoo.com
74.6.52.11	A	geocities.com
74.6.52.15	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.16	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.17	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.26	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.34	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.48	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.51	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.63	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.64	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.79	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.81	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.84	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.97	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.98	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.103	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.109	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.114	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.135	PTR	phtml3.store.vip.gq1.yahoo.com
74.6.52.135	A	cwhazelwoodartgallery.com
74.6.52.135	A	cardenscandys.com
74.6.52.138	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.139	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.141	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.144	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.150	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.187	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.195	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.210	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.231	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.232	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.237	PTR	unknown-74-6-52-x.yahoo.com
74.6.52.253	PTR	unknown-74-6-52-x.yahoo.com