Robtex

Up: 67.195.224.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 67.195.232.0/22
Down right: 67.195.236.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
67.195.236.1	PTR	ha1.gi-0-43.bas-1-yst.ac4.yahoo.com
67.195.236.9	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.11	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.17	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.25	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.27	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.34	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.41	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.42	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.48	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.49	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.50	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.58	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.64	A+PTR	imap-att1.mail.vip.bf1.yahoo.com
67.195.236.64	A	imap.mail.att.am0.yahoodns.net
67.195.236.72	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.72	A	imap2-star.mail.vip.bf1.yahoo.com
67.195.236.75	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.81	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.82	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.90	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.91	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.97	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.98	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.99	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.104	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.113	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.114	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.115	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.121	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.122	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.137	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.138	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.139	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.145	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.145	A	imap12.mail.vip.bf1.yahoo.com
67.195.236.145	A	htc.imap.mail.yahoo.com
67.195.236.146	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.146	A	htc.imap.mail.yahoo.com
67.195.236.146	A	imap.mail.am0.yahoodns.net
67.195.236.147	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.147	A	htc.imap.mail.yahoo.com
67.195.236.147	A	imap.mail.am0.yahoodns.net
67.195.236.148	A	htc.imap.mail.yahoo.com
67.195.236.149	A	htc.imap.mail.yahoo.com
67.195.236.149	A	imap.mail.am0.yahoodns.net
67.195.236.149	A	imap-ssl.mail.yahoo.com
67.195.236.152	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.154	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.160	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.161	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.162	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.163	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.168	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.184	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.186	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.201	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.208	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.217	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.218	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.225	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.227	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.232	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.235	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.240	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.243	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.249	PTR	unknown-67-195-236-x.yahoo.com
67.195.236.250	PTR	unknown-67-195-236-x.yahoo.com
67.195.237.147	PTR	unknown-67-195-237-x.yahoo.com