Robtex

Up: 76.13.28.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 76.13.28.128/26
Down right: 76.13.28.192/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
76.13.28.128	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.130	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.132	A+PTR	serf.ue.vip.bf1.yahoo.net
76.13.28.133	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.136	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.137	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.139	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.141	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.143	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.144	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.145	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.146	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.147	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.150	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.151	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.152	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.159	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.161	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.163	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.167	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.168	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.169	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.170	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.171	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.172	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.178	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.179	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.180	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.181	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.184	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.186	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.188	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.189	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.191	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.194	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.195	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.196	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.196	A	cooliris.com
76.13.28.196	A	emea.adspecs.yahoo.com
76.13.28.197	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.197	A	sframes-debuga10.adx.vip.bf1.yahoo.com
76.13.28.198	A+PTR	gd.ads.vip.bf1.yahoo.com
76.13.28.198	A	fr.adserver.yahoo.com
76.13.28.198	A	scrserv.amp.yahoo.com
76.13.28.202	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.207	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.209	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.212	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.214	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.215	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.216	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.218	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.222	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.228	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.230	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.232	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.236	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.240	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.241	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.243	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.246	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.247	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.250	PTR	unknown-76-13-28-x.yahoo.com
76.13.28.255	PTR	unknown-76-13-28-x.yahoo.com