Robtex

Up: 74.6.160.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 74.6.160.128/26
Down right: 74.6.160.192/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
74.6.160.128	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.131	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.132	A+PTR	vl-121.usw2-1-lba.gq1.yahoo.com
74.6.160.133	A+PTR	vl-121.slb3-1-lba.gq1.yahoo.com
74.6.160.134	A+PTR	vl-121.slb4-1-lba.gq1.yahoo.com
74.6.160.135	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.136	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.137	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.138	A+PTR	ats2.member.vip.gq1.yahoo.com
74.6.160.138	A	openauth.aol.akadns.net
74.6.160.138	A	ats.member.g02.yahoodns.net
74.6.160.141	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.142	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.145	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.147	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.148	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.150	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.151	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.153	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.155	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.156	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.157	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.158	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.159	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.160	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.162	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.163	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.165	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.166	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.167	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.168	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.169	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.170	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.171	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.172	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.173	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.174	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.175	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.176	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.178	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.180	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.181	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.182	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.183	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.184	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.185	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.186	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.187	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.188	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.190	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.191	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.194	A+PTR	vl-502.bas-e1.cc1.yahoo.com
74.6.160.195	PTR	vl-502.bas-e2.cc1.yahoo.com
74.6.160.197	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.198	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.199	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.203	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.204	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.205	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.208	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.216	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.217	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.218	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.219	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.220	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.221	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.222	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.224	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.225	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.226	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.230	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.231	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.233	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.234	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.235	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.238	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.239	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.240	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.241	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.242	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.244	PTR	lo1-tun2.cc1.yahoo.com
74.6.160.246	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.248	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.250	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.250	A	lo0.bas-e1.cc1.yahoo.com
74.6.160.253	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.254	PTR	unknown-74-6-160-x.yahoo.com
74.6.160.255	PTR	unknown-74-6-160-x.yahoo.com