The 911 S5 Proxies-as-a-Service was a prolific proxy service that was utilizing botnets to offer a very good degree of anonymity for the actions of its users online which often includes web sites scraping proxy chaining to avoid detection and improve their degree of anonymity and for other malicious activities which often include spam and port scanning activities.

Sample domains:

hxxp://911.re
hxxp://911.gg
hxxp://911s5.net
hxxp://911s5.org
hxxp://911s5.com
hxxp://maskypn.ce
hxxp://maskypn.org
hxxp://dewvpn.com
hxxp://dewvpn.net
hxxp://dewvpn.org
hxxp://dewvpn.ce
hxxp://proxygate.net
hxxp://shinevpn.com
hxxp://shinevpn.org
hxxp://paladinypn.com
hxxp://paladinypn.org
hxxp://shieldvpn.org
hxxp://cloudrouter.io
hxxp://cloudrouter.pro
hxxp://cloudrouting.net
hxxp://reachfresh.com
hxxp://updatepanel.ce
hxxp://upgradeportal.org

Sample photos: