Robtex

Up: 46.228.40.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 46.228.44.0/23
Down right: 46.228.46.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
46.228.46.162	PTR	japi36.global.media.ir2.yahoo.com
46.228.46.165	PTR	japi39.global.media.ir2.yahoo.com
46.228.46.176	PTR	japi50.global.media.ir2.yahoo.com
46.228.46.189	PTR	japi63.global.media.ir2.yahoo.com
46.228.46.238	PTR	qayts2.l7.search.ir2.yahoo.com
46.228.46.238	A	malaysia.qa.video.search.yahoo.com
46.228.47.1	PTR	engine1.yql.ir2.yahoo.com
46.228.47.11	PTR	engine11.yql.ir2.yahoo.com
46.228.47.14	PTR	engine14.yql.ir2.yahoo.com
46.228.47.27	PTR	ads1011.flurry.ir2.yahoo.com
46.228.47.27	A	engine93.yql.ir2.yahoo.com
46.228.47.31	A+PTR	engine97.yql.ir2.yahoo.com
46.228.47.36	A	yts14.global.media.ir2.yahoo.com
46.228.47.37	A	yts15.global.media.ir2.yahoo.com
46.228.47.38	A	yts16.global.media.ir2.yahoo.com
46.228.47.39	A	yts17.global.media.ir2.yahoo.com
46.228.47.40	A+PTR	yts5.global.media.ir2.yahoo.com
46.228.47.41	A	border-preview1.global.media.ir2.yahoo.com
46.228.47.42	A	border-preview2.global.media.ir2.yahoo.com
46.228.47.43	A	border-preview3.global.media.ir2.yahoo.com
46.228.47.46	A+PTR	be1.yt.ir2.yahoo.com
46.228.47.47	A+PTR	be2.yt.ir2.yahoo.com
46.228.47.50	A	l33.member.ir2.yahoo.com
46.228.47.52	PTR	ats101.member.ir2.yahoo.com
46.228.47.54	A	gamma-ats01.member.ir2.yahoo.com
46.228.47.64	A+PTR	w1.lrs.ir2.yahoo.com
46.228.47.65	A+PTR	w2.lrs.ir2.yahoo.com
46.228.47.66	A+PTR	e500937.ostk.bm2.prod.ir2.yahoo.com
46.228.47.66	A	w3.lrs.ir2.yahoo.com
46.228.47.67	PTR	w4.lrs.ir2.yahoo.com
46.228.47.68	PTR	e500934.ostk.bm2.prod.ir2.yahoo.com
46.228.47.68	A	w5.lrs.ir2.yahoo.com
46.228.47.69	A+PTR	w6.lrs.ir2.yahoo.com
46.228.47.71	A+PTR	subcache2.snp.mobile.ir2.yahoo.com
46.228.47.77	A	ws2.yoschrome.ir2.yahoo.com
46.228.47.96	A+PTR	japi123.global.media.ir2.yahoo.com
46.228.47.110	A+PTR	scache40.global.media.ir2.yahoo.com
46.228.47.114	PTR	unknown.yahoo.com
46.228.47.114	A	ir-ds-any-fp3-real.wa1.b.yahoo.com
46.228.47.114	A	m.hk.yahoo.com
46.228.47.115	PTR	unknown-46-228-47-x.yahoo.com
46.228.47.115	A	ir-ds-any-fp3-real.wa1.b.yahoo.com
46.228.47.115	A	m.hk.yahoo.com
46.228.47.116	A+PTR	yts01.l7.search.ir2.yahoo.com
46.228.47.117	A+PTR	yts02.l7.search.ir2.yahoo.com
46.228.47.118	A+PTR	yts03.l7.search.ir2.yahoo.com
46.228.47.119	A+PTR	yts04.l7.search.ir2.yahoo.com
46.228.47.120	A+PTR	stgyts1.l7.search.ir2.yahoo.com
46.228.47.121	A+PTR	stgyts2.l7.search.ir2.yahoo.com
46.228.47.179	A	fe610.global.media.ir2.yahoo.com
46.228.47.180	A	fe611.global.media.ir2.yahoo.com
46.228.47.198	A+PTR	fe630.global.media.ir2.yahoo.com
46.228.47.215	PTR	fe649.global.media.ir2.yahoo.com
46.228.47.236	PTR	ird9572.ostk.bm2.prod.ir2.yahoo.com
46.228.47.236	A	scache47.global.media.ir2.yahoo.com
46.228.47.255	PTR	unknown.yahoo.com