Robtex

Up: 98.136.100.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 98.136.100.0/25
Down right: 98.136.100.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
98.136.100.136	PTR	unknown.yahoo.com
98.136.100.136	A	r2.edge.media.vip.gq1.yahoo.com
98.136.100.137	PTR	ac4-int2inxctwfm-001.raptor.adx.pool.ac4.yahoo.com
98.136.100.140	PTR	public1.comet.vip.gq1.yahoo.com
98.136.100.140	A	any-ds-comet.yahoo.a01.yahoodns.net
98.136.100.140	A	ds-comet.yahoo.g01.yahoodns.net
98.136.100.141	PTR	unknown-98-136-100-x.yahoo.com
98.136.100.141	A	media-router-fp1.canary.media.vip.gq1.yahoo.com
98.136.100.142	PTR	media-router-api1.prod.media.vip.gq1.yahoo.com
98.136.100.142	A	graviton-ncp-content-gateway.g04.yahoodns.net
98.136.100.142	A	ds-media-router-api1.prod.media.a05.yahoodns.net
98.136.100.143	PTR	media-router1.prod.media.vip.gq1.yahoo.com
98.136.100.143	A	any-oob-finance-router.a03.yahoodns.net
98.136.100.143	A	router.abuesports.g03.yahoodns.net
98.136.100.146	PTR	c1.ycs.vip.gq1.yahoo.com
98.136.100.146	A	media-router-aol1.prod.media.vip.gq1.yahoo.com
98.136.100.146	A	media-router-aol1.prod.g03.yahoodns.net
98.136.100.149	A+PTR	media-router-flurry71.prod.media.vip.gq1.yahoo.com
98.136.100.149	A	media-router-flurry7.prod.media.wg1.b.yahoo.com
98.136.100.163	PTR	unknown.yahoo.com
98.136.100.236	PTR	unknown-98-136-100-x.yahoo.com