Robtex

Up: 72.30.224.0/19
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Down left: 72.30.240.0/21
Down right: 72.30.248.0/21

IP	Type	Hostname
72.30.240.0	PTR	unknown-72-30-240-x.yahoo.com
72.30.240.16	PTR	unknown-72-30-240-x.yahoo.com
72.30.240.17	PTR	unknown-72-30-240-x.yahoo.com
72.30.240.18	PTR	unknown-72-30-240-x.yahoo.com
72.30.240.64	PTR	unknown-72-30-240-x.yahoo.com
72.30.240.80	PTR	unknown-72-30-240-x.yahoo.com
72.30.240.81	PTR	unknown-72-30-240-x.yahoo.com
72.30.240.82	PTR	unknown-72-30-240-x.yahoo.com
72.30.240.128	PTR	unknown-72-30-240-x.yahoo.com
72.30.240.144	PTR	unknown-72-30-240-x.yahoo.com
72.30.240.145	PTR	unknown-72-30-240-x.yahoo.com
72.30.240.160	PTR	unknown-72-30-240-x.yahoo.com
72.30.240.162	PTR	unknown-72-30-240-x.yahoo.com
72.30.240.176	PTR	unknown-72-30-240-x.yahoo.com
72.30.240.177	PTR	unknown-72-30-240-x.yahoo.com
72.30.240.178	PTR	unknown-72-30-240-x.yahoo.com
72.30.240.179	PTR	unknown-72-30-240-x.yahoo.com
72.30.240.192	PTR	unknown-72-30-240-x.yahoo.com
72.30.240.208	PTR	unknown-72-30-240-x.yahoo.com
72.30.240.209	PTR	unknown-72-30-240-x.yahoo.com
72.30.240.210	PTR	unknown-72-30-240-x.yahoo.com
72.30.241.0	PTR	unknown-72-30-241-x.yahoo.com
72.30.241.16	PTR	unknown-72-30-241-x.yahoo.com
72.30.241.17	PTR	unknown-72-30-241-x.yahoo.com
72.30.241.18	PTR	unknown-72-30-241-x.yahoo.com
72.30.241.48	PTR	unknown-72-30-241-x.yahoo.com
72.30.241.64	PTR	unknown-72-30-241-x.yahoo.com
72.30.241.80	PTR	unknown-72-30-241-x.yahoo.com
72.30.241.81	PTR	unknown-72-30-241-x.yahoo.com
72.30.241.121	A	gssp214n38.ygrid.corp.sp1.yahoo.com
72.30.241.128	PTR	unknown-72-30-241-x.yahoo.com
72.30.241.144	PTR	unknown-72-30-241-x.yahoo.com
72.30.241.145	PTR	unknown-72-30-241-x.yahoo.com
72.30.241.146	PTR	unknown-72-30-241-x.yahoo.com
72.30.241.192	PTR	unknown-72-30-241-x.yahoo.com
72.30.241.208	PTR	unknown-72-30-241-x.yahoo.com
72.30.241.209	PTR	unknown-72-30-241-x.yahoo.com
72.30.241.210	PTR	unknown-72-30-241-x.yahoo.com
72.30.242.30	A	gssp211n11.ygrid.corp.sp1.yahoo.com
72.30.243.244	A	gssp204n33.ygrid.corp.sp1.yahoo.com
72.30.255.7	A	netscaler-f56-snip-v310.ac2.yahoo.com