Robtex

Up: 217.146.176.0/21
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Down left: 217.146.176.0/23
Down right: 217.146.178.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
217.146.176.0	PTR	unknown.yahoo.com
217.146.176.7	PTR	unknown-217-146-176-x.yahoo.com
217.146.176.19	PTR	unknown-217-146-176-x.yahoo.com
217.146.176.29	PTR	unknown-217-146-176-x.yahoo.com
217.146.176.54	PTR	unknown-217-146-176-x.yahoo.com
217.146.176.102	PTR	unknown-217-146-176-x.yahoo.com
217.146.176.103	PTR	unknown-217-146-176-x.yahoo.com
217.146.176.119	PTR	unknown-217-146-176-x.yahoo.com
217.146.176.135	PTR	ha11-mail.dns.ir2.yahoo.com
217.146.176.137	PTR	ha13-mail.dns.ir2.yahoo.com
217.146.176.138	PTR	ha14-mail.dns.ir2.yahoo.com
217.146.176.168	PTR	unknown-217-146-176-x.yahoo.com
217.146.176.205	A+PTR	i102.crawl.yahoo.net
217.146.176.233	PTR	unknown-217-146-176-x.yahoo.com
217.146.176.248	PTR	unknown-217-146-176-x.yahoo.com
217.146.176.252	PTR	unknown-217-146-176-x.yahoo.com
217.146.177.21	PTR	unknown-217-146-177-x.yahoo.com
217.146.177.28	PTR	c5.finance.ir2.yahoo.com
217.146.177.37	PTR	xsltm4.finance.ir2.yahoo.com
217.146.177.39	A	xsltm6.finance.ir2.yahoo.com
217.146.177.64	PTR	unknown-217-146-177-x.yahoo.com
217.146.177.218	PTR	unknown-217-146-177-x.yahoo.com
217.146.177.227	PTR	unknown-217-146-177-x.yahoo.com
217.146.178.3	PTR	vl-137.bas1-2-prd.ir2.yahoo.com
217.146.178.42	PTR	unknown-217-146-178-x.yahoo.com
217.146.178.57	PTR	unknown-217-146-178-x.yahoo.com
217.146.178.72	PTR	unknown-217-146-178-x.yahoo.com
217.146.178.81	PTR	unknown-217-146-178-x.yahoo.com
217.146.178.144	PTR	unknown-217-146-178-x.yahoo.com
217.146.178.162	PTR	unknown-217-146-178-x.yahoo.com
217.146.178.187	PTR	unknown-217-146-178-x.yahoo.com
217.146.178.255	PTR	255.178.146.217.aprez.ostk.prod.ir2.yahoo.com
217.146.179.0	PTR	0.179.146.217.aprez.ostk.prod.ir2.yahoo.com
217.146.179.5	PTR	unknown-217-146-179-x.yahoo.com
217.146.179.30	A	prot.ymx.yahoo.com
217.146.179.32	A+PTR	arba3.forums.maktoob.vip.ir2.yahoo.com
217.146.179.32	A	arb3.forums.a01.yahoodns.net
217.146.179.48	PTR	unknown-217-146-179-x.yahoo.com
217.146.179.113	A+PTR	fe18.intl.search.ir2.yahoo.com
217.146.179.123	PTR	web5.forums.maktoob.ir2.yahoo.com
217.146.179.131	A+PTR	ats1.fp.vip.ir2.yahoo.com
217.146.179.131	A	fr.cinema.yahoo.com
217.146.179.131	A	in.movies.yahoo.com
217.146.179.157	PTR	web9.forums.maktoob.ir2.yahoo.com
217.146.179.176	PTR	unknown-217-146-179-x.yahoo.com
217.146.179.200	PTR	bktb02.intl.gossip.search.ir2.yahoo.com
217.146.179.255	PTR	unknown.yahoo.com