Robtex

Up: 98.137.80.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 98.137.84.0/23
Down right: 98.137.86.0/23

IP	Type	Hostname
98.137.84.191	PTR	unknown-98-137-84-x.yahoo.com
98.137.86.0	PTR	unknown-98-137-86-x.yahoo.com
98.137.86.1	A+PTR	vl-120.tor55-103-pda.ne1.yahoo.com
98.137.86.9	A	sync200003x-2.mail.ne1.yahoo.com
98.137.86.18	A+PTR	sync200046.mail.ne1.yahoo.com
98.137.86.37	A+PTR	qrs1006.nads.ne1.yahoo.com
98.137.86.49	A+PTR	sync200088-2.mail.ne1.yahoo.com
98.137.86.50	A+PTR	sync200088-3.mail.ne1.yahoo.com
98.137.86.58	A+PTR	sync200111-2.mail.ne1.yahoo.com
98.137.86.65	A+PTR	vl-120.tor56-104-pda.ne1.yahoo.com
98.137.86.77	A+PTR	sync200012-3.mail.ne1.yahoo.com
98.137.86.85	A+PTR	sync201005-3.mail.ne1.yahoo.com
98.137.86.105	A+PTR	qrs2047.nads.ne1.yahoo.com
98.137.86.106	A+PTR	qrs2050.nads.ne1.yahoo.com
98.137.86.123	A+PTR	6289567b.ostk.bm1.prod.ne1.yahoo.com
98.137.86.126	A	sync200115-3.mail.ne1.yahoo.com
98.137.86.129	A	vl-120.tor57-105-pda.ne1.yahoo.com
98.137.86.131	PTR	unknown-98-137-86-x.yahoo.com
98.137.86.159	A+PTR	sync200001i.mail.ne1.yahoo.com
98.137.86.166	A+PTR	qrs2038.nads.ne1.yahoo.com
98.137.86.178	A+PTR	sync200033-3.mail.ne1.yahoo.com
98.137.86.184	A+PTR	sync200060-3.mail.ne1.yahoo.com
98.137.86.191	PTR	unknown-98-137-86-x.yahoo.com
98.137.86.193	A	vl-120.tor58-118-pda.ne1.yahoo.com
98.137.86.208	A+PTR	qrs2006.nads.ne1.yahoo.com
98.137.86.231	A+PTR	qrs2040.nads.ne1.yahoo.com
98.137.86.234	A+PTR	qrs2049.nads.ne1.yahoo.com
98.137.86.245	A+PTR	sync200103-2.mail.ne1.yahoo.com
98.137.86.255	PTR	unknown-98-137-86-x.yahoo.com
98.137.87.2	PTR	vl-122.bas1-1-edg.a4e.yahoo.com
98.137.87.3	A+PTR	vl-122.bas2-1-edg.a4e.yahoo.com
98.137.87.6	A+PTR	a4eing01-ingest.atlas.cdn.a4e.yimg.com
98.137.87.11	PTR	a4eing04-ingest.atlas.cdn.a4e.yimg.com
98.137.87.33	A	ha1.vl-123.bas-1-edg.a4e.yahoo.com
98.137.87.35	PTR	vl-123.bas1-1-edg.a4e.yahoo.com
98.137.87.36	PTR	vl-123.bas2-1-edg.a4e.yahoo.com
98.137.87.37	A+PTR	a4edlv07-fms.atlas.cdn.a4e.yimg.com
98.137.87.38	PTR	unknown.yahoo.com
98.137.87.38	A	a4edlv08-fms.atlas.cdn.a4e.yimg.com
98.137.87.39	PTR	unknown.yahoo.com
98.137.87.39	A	a4edlv09-fms.atlas.cdn.a4e.yimg.com
98.137.87.41	PTR	unknown-98-137-87-x.yahoo.com
98.137.87.43	PTR	sync200051.mail.ne1.yahoo.com
98.137.87.49	PTR	unknown-98-137-87-x.yahoo.com
98.137.87.65	PTR	vl-120.tor60-120-pda.ne1.yahoo.com
98.137.87.66	PTR	ha2.vl-124.bas-1-edg.a4e.yahoo.com
98.137.87.68	PTR	vl-124.bas2-1-edg.a4e.yahoo.com
98.137.87.75	A+PTR	b101.digu.vip.a4e.yahoo.net
98.137.87.75	A	pulse.yimg.com
98.137.87.75	A	any-yimg2.pulse.a03.yahoodns.net
98.137.87.133	PTR	sync200002b-1.mail.ne1.yahoo.com
98.137.87.133	A	rsw1-1-edg.a4e.yahoo.com
98.137.87.138	PTR	unknown-98-137-87-x.yahoo.com
98.137.87.138	A	lbf2-1-edg.a4e.yahoo.com
98.137.87.139	A	lbf3-1-edg.a4e.yahoo.com
98.137.87.140	PTR	unknown-98-137-87-x.yahoo.com
98.137.87.140	A	lbf4-1-edg.a4e.yahoo.com
98.137.87.147	A+PTR	qrs4032.nads.ne1.yahoo.com
98.137.87.148	PTR	unknown-98-137-87-x.yahoo.com
98.137.87.148	A	lbf6-1-edg.a4e.yahoo.com
98.137.87.152	PTR	rsw10-1-edg.a4e.yahoo.com
98.137.87.156	PTR	rsw14-1-edg.a4e.yahoo.com
98.137.87.157	PTR	unknown.yahoo.com
98.137.87.157	A	slb1-1-edg.a4e.yahoo.com
98.137.87.158	PTR	sync200119.mail.ne1.yahoo.com
98.137.87.158	A	slb2-1-edg.a4e.yahoo.com
98.137.87.160	PTR	unknown-98-137-87-x.yahoo.com
98.137.87.163	PTR	unknown-98-137-87-x.yahoo.com
98.137.87.166	PTR	unknown-98-137-87-x.yahoo.com
98.137.87.202	A+PTR	d1.dist.vip.a4e.yahoo.com
98.137.87.215	A+PTR	tftp1.ops.a4e.yahoo.com
98.137.87.218	PTR	syslog1.ops.a4e.yahoo.com
98.137.87.222	PTR	tool1-vm1.ops.a4e.yahoo.com
98.137.87.239	PTR	unknown-98-137-87-x.yahoo.com
98.137.87.244	PTR	unknown-98-137-87-x.yahoo.com
98.137.87.253	PTR	lo0.bas1-1-edg.a4e.yahoo.com