Ugh, new one on me. I've only got them at
64.71.128.0/18
65.49.0.0/17
184.104.0.0/15
My recollection is there are far more threads than this search shows.
Try
this spelling [google.com] or rather punctuation. Never would have guessed what a difference it could make.
(Ugh again! It's that gs_l that someone was only just asking about!)
There's an old (not too) four page thread on Hurricane.
Best thing any webmaster may do is:
RewriteCond %{REMOTE_ADDR} ^64\.62\.(12[8-9]¦1[3-9][0-9]¦2[0-5][0-9])\. [OR]
:)
Oh, and there are loads of IP ranges in
this recent thread [webmasterworld.com].