Robtex

Up: 68.180.130.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 68.180.130.0/26
Down right: 68.180.130.64/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
68.180.130.0	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.1	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.2	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.3	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.4	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.5	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.6	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.7	PTR	unknown.yahoo.com
68.180.130.9	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.11	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.12	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.14	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.15	A+PTR	yf2.yahoo.com
68.180.130.15	A	yf3.a1.b.yahoo.net
68.180.130.15	A	daewonrnt.com.cn
68.180.130.16	A+PTR	yf2prime.yahoo.com
68.180.130.17	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.18	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.21	PTR	unknown.yahoo.com
68.180.130.22	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.23	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.24	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.25	PTR	unknown.yahoo.com
68.180.130.26	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.28	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.30	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.31	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.32	PTR	unknown.yahoo.com
68.180.130.35	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.36	PTR	unknown.yahoo.com
68.180.130.37	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.38	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.40	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.41	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.42	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.43	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.44	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.45	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.47	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.49	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.50	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.51	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.52	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.54	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.56	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.57	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.58	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.59	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.60	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.61	PTR	unknown.yahoo.com
68.180.130.62	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.63	PTR	unknown.yahoo.com
68.180.130.64	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.65	PTR	unknown.yahoo.com
68.180.130.66	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.68	PTR	unknown.yahoo.com
68.180.130.69	PTR	unknown.yahoo.com
68.180.130.70	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.71	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.74	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.76	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.77	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.79	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.81	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.82	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.84	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.85	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.86	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.88	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.89	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.90	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.91	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.92	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.93	PTR	unknown.yahoo.com
68.180.130.94	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.96	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.97	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.98	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.100	PTR	unknown.yahoo.com
68.180.130.101	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.102	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.103	PTR	unknown.yahoo.com
68.180.130.104	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.106	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.109	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.110	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.112	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.115	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.116	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.117	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.118	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.119	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.120	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.121	PTR	unknown.yahoo.com
68.180.130.123	PTR	unknown-68-180-130-x.yahoo.com
68.180.130.124	PTR	unknown.yahoo.com
68.180.130.126	PTR	unknown.yahoo.com