Robtex

Up: 68.142.254.0/24
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Down left: 68.142.254.0/26
Down right: 68.142.254.64/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
68.142.254.0	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.1	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.2	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.3	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.6	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.7	PTR	unknown.yahoo.com
68.142.254.8	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.13	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.14	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.15	A+PTR	yf1.yahoo.com
68.142.254.15	A	yf4.yahoo.com
68.142.254.15	A	yf3.a1.b.yahoo.net
68.142.254.16	A+PTR	yf1prime.yahoo.com
68.142.254.17	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.19	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.20	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.21	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.22	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.24	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.32	PTR	unknown.yahoo.com
68.142.254.33	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.36	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.39	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.40	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.41	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.42	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.45	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.46	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.51	PTR	unknown.yahoo.com
68.142.254.53	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.54	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.55	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.56	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.60	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.61	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.63	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.65	PTR	unknown.yahoo.com
68.142.254.69	PTR	unknown.yahoo.com
68.142.254.76	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.81	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.82	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.83	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.86	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.87	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.91	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.92	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.93	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.94	PTR	unknown.yahoo.com
68.142.254.97	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.98	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.103	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.110	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.111	PTR	unknown.yahoo.com
68.142.254.113	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.114	PTR	unknown.yahoo.com
68.142.254.116	PTR	unknown.yahoo.com
68.142.254.117	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.119	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.120	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.121	PTR	unknown-68-142-254-x.yahoo.com
68.142.254.124	PTR	unknown-68-142-254-x.yahoo.com