I've just gone Cersei Wildfire on Amazon AWS:
Deny from 3.0.0.0/9
Deny from 13.52.0.0/14
Deny from 13.56.0.0/14
Deny from 13.112.0.0/14
Deny from 13.114.114.0/24
Deny from 13.124.0.0/14
Deny from 13.208.0.0/14
Deny from 13.228.0.0/14
Deny from 13.232.0.0/14
Deny from 13.250.0.0/15
Deny from 15.164.0.0/15
Deny from 18.128.0.0/9
Deny from 23.20.0.0/14
Deny from 34.192.0.0/10
Deny from 35.152.0.0/13
Deny from 35.160.0.0/13
Deny from 35.168.0.0/13
Deny from 35.176.0.0/13
Deny from 50.16.0.0/14
Deny from 52.0.0.0/11
Deny from 52.32.0.0/11
Deny from 52.64.0.0/12
Deny from 52.84.0.0/14
Deny from 52.88.0.0/13
Deny from 52.192.0.0/11
Deny from 54.64.0.0/13
Deny from 54.80.0.0/12
Deny from 54.144.0.0/12
Deny from 54.160.0.0/12
Deny from 54.176.0.0/12
Deny from 54.192.0.0/12
Deny from 54.208.0.0/13
Deny from 54.218.0.0/16
Deny from 54.219.0.0/16
Deny from 54.221.0.0/16
Deny from 54.224.0.0/12
Deny from 54.240.0.0/12
Deny from 100.24.0.0/13
Deny from 107.20.0.0/14
Deny from 184.72.0.0/15
Yeah, I know I could have combined it down a little more. Just got tired of all the c**p coming out of those particular CIDRs.