>>70
No, 4chan has much more than 3 IPs.
Off the top of my head:

team.4chan.org has address 66.207.165.163
yotsuba.4chan.org has address 66.207.165.165
www.4chan.org has address 66.207.165.166
    -- also aliased to 4chan.org and mail.4chan.org
orz.4chan.org has address 66.207.165.168
tmp.4chan.org has address 66.207.165.169
zip.4chan.org has address 66.207.165.176
img.4chan.org has address 66.207.165.181
dat.4chan.org has address 66.207.165.182
fuuka.4chan.org has address 66.207.165.185
cgi.4chan.org has address 66.207.165.186

There's more (IIRC, 4chan owns everything from 66.207.165.160 to .190 or so) but those are just what I can think of in 15 seconds.