Robtex

Up: 216.145.32.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 216.145.48.0/21
Down right: 216.145.56.0/21

IP	Type	Hostname
216.145.48.0	PTR	unknown.yahoo.com
216.145.48.1	A+PTR	re-2-d998b.cfw1-a-gci.corp.yahoo.com
216.145.48.4	A	v998-1-si1.corp.yahoo.com
216.145.48.5	A	v998-1-si2.corp.yahoo.com
216.145.48.6	A	r3.dns.corp.yahoo.com
216.145.48.13	A	proxy.corp.yahoo.com
216.145.48.16	A+PTR	public-old.corp.yahoo.com
216.145.48.19	A+PTR	proxy6.corp.yahoo.com
216.145.48.19	A	proxy.corp.yahoo.com
216.145.48.23	A	radius4.corp.yahoo.com
216.145.48.32	A	mrin1.yahoo.com
216.145.48.33	A+PTR	mrin2.yahoo.com
216.145.48.34	A+PTR	mail-relay1.yahoo.com
216.145.48.38	A	mail-relay1-new.corp.yahoo.com
216.145.48.59	A	r2.dns.corp.yahoo.com
216.145.48.66	A+PTR	sac-demo.corp.yahoo.com
216.145.48.70	A	av2-mrin.yahoo.com
216.145.48.79	A	ndropbox.corp.yahoo.com
216.145.48.85	A	ims2.corp.yahoo.com
216.145.48.97	PTR	unknown-216-145-48-x.yahoo.com
216.145.48.98	A	proxy.corp.yahoo.com
216.145.48.112	A	guesthouse.inktomi.com
216.145.48.114	PTR	unknown-216-145-48-x.yahoo.com
216.145.48.117	A	customercare-old.corp.yahoo.com
216.145.48.129	A+PTR	snv-extranet-rtr.corp.yahoo.com
216.145.48.130	A+PTR	snv-extranet-rtr1.corp.yahoo.com
216.145.48.140	A	akamai-test1.corp.yahoo.com
216.145.48.144	A	akamai-test1a.corp.yahoo.com
216.145.48.148	A	vpn-1-gci.corp.yahoo.com
216.145.48.149	A	vpn1-1-gci.corp.yahoo.com
216.145.48.253	A	v987-si1.corp.yahoo.com
216.145.49.69	A	fa0-1-snv-partner-rtr1.corp.yahoo.com
216.145.49.150	A	support.resumix.com
216.145.49.152	A	scopus1.resumix.com
216.145.49.164	A	snv-encoder-sw1.corp.yahoo.com
216.145.49.173	A	fvencoderpc1.corp.yahoo.com
216.145.49.178	A	fvencoderpc3-8.corp.yahoo.com
216.145.49.253	A	pbfapp01.fin.yahoo.com
216.145.50.11	A	builder28.mail.corp.yahoo.com
216.145.50.22	A	rt-is.yahoo.com
216.145.50.39	A	barnyard.corp.yahoo.com
216.145.50.40	A	hanta.corp.yahoo.com
216.145.50.40	A	hanta.yahoo.com
216.145.50.41	A	hawk.corp.yahoo.com
216.145.50.49	A+PTR	s47-backup.corp.yahoo.com
216.145.50.54	A	rt-eng.yahoo.com
216.145.50.59	A	login4.corp.yahoo.com
216.145.50.60	A	db1-vm0.ops.corp.yahoo.com
216.145.50.69	A	ygp-vmh1.grp.corp.yahoo.com
216.145.50.72	A	jakeslavedb.dev.news.corp.yahoo.com
216.145.50.80	A+PTR	vv-master-01.ops.corp.yahoo.com
216.145.50.95	A	ho1.dns.corp.snv.yahoo.com
216.145.50.99	A	cheese.corp.yahoo.com
216.145.50.131	A	checker.yahoo.com
216.145.50.145	A+PTR	shack350.corp.yahoo.com
216.145.50.204	A	bid1.ads.yahoo.com
216.145.50.216	A	app.themis.corp.yahoo.com
216.145.50.225	A+PTR	v350-si1.corp.yahoo.com
216.145.50.233	A	app.themis.corp.yahoo.com
216.145.50.240	A	v350-si2.corp.yahoo.com
216.145.50.251	A	login5.corp.yahoo.com
216.145.51.95	A	snv-pitney.corp.yahoo.com
216.145.51.96	A	351-si2.corp.yahoo.com
216.145.51.115	A	dataproxy3.corp.yahoo.com
216.145.51.137	A	security-srv1.corp.yahoo.com
216.145.51.140	A	yahoocc2.corp.yahoo.com
216.145.51.156	A	datamart.corp.yahoo.com
216.145.51.206	A	dreamland.yahoo.com
216.145.51.234	A	tftp1.corp.yahoo.com
216.145.54.5	A	p1.disaster.yahoo.com
216.145.54.7	A	socks2.corp.yahoo.com
216.145.54.7	A	russelldare.com
216.145.54.17	A	ccna02.corp.yahoo.com
216.145.54.24	A	dev2.ye.yahoo.com
216.145.54.33	A	filo-new.yahoo.com
216.145.54.35	A+PTR	morgue1.corp.yahoo.com
216.145.54.40	A	p2.disaster.yahoo.com
216.145.54.44	A	socks4.corp.yahoo.com
216.145.54.50	A+PTR	socks5.corp.yahoo.com
216.145.54.52	A	socks.corp.yahoodns.net
216.145.54.52	A	socks.yahoo.com
216.145.54.70	A	login1.vip.corp.yahoo.com
216.145.54.71	A	markmatter.corp.yahoo.com
216.145.54.80	PTR	web401.mail.yahoo.com
216.145.54.80	A	f4.mail.yahoo.com
216.145.54.82	A+PTR	f4.mail.yahoo.com
216.145.54.94	A	darthvader12-dm.corp.yahoo.com
216.145.54.95	A	ho2.dns.corp.snv.yahoo.com
216.145.54.100	A	isops1.yahoo.com
216.145.54.109	A	smarthost.yahoo.com
216.145.54.109	A	mrout4.yahoo.com
216.145.54.154	A	smarthost.yahoo.com
216.145.54.154	A	mrout5.yahoo.com
216.145.54.155	A	smarthost.yahoo.com
216.145.54.155	A	mrout6.yahoo.com
216.145.54.163	A	surf.corp.yahoo.com
216.145.54.163	A	class.yahoo.com
216.145.54.171	A	smarthost.yahoo.com
216.145.54.171	A	mrout1.yahoo.com
216.145.54.172	A	smarthost.yahoo.com
216.145.54.173	A	smarthost.yahoo.com
216.145.54.201	A	filo.yahoo.com
216.145.54.203	A	darrow2.data.yahoo.com
216.145.54.234	A	brocade1.disaster.yahoo.com
216.145.55.105	A	canary5.data.yahoo.com
216.145.55.115	PTR	unknown-216-145-55-x.yahoo.com
216.145.55.236	A	ops2.data.yahoo.com
216.145.57.12	A	sufferfeet-lm.corp.yahoo.com
216.145.57.33	PTR	unknown-216-145-57-x.yahoo.com
216.145.57.33	A	reasonplace-dx.corp.yahoo.com
216.145.57.128	PTR	unknown-216-145-57-x.yahoo.com
216.145.58.119	A	yahoogoogle.com.br
216.145.58.178	PTR	unknown-216-145-58-x.yahoo.com
216.145.60.147	PTR	unknown-216-145-60-x.yahoo.com
216.145.61.97	PTR	unknown-216-145-61-x.yahoo.com
216.145.61.178	PTR	unknown-216-145-61-x.yahoo.com
216.145.61.208	PTR	unknown-216-145-61-x.yahoo.com
216.145.63.18	PTR	unknown-216-145-63-x.yahoo.com
216.145.63.64	PTR	unknown-216-145-63-x.yahoo.com