CloudFlare makes websites faster and more secure.  When you put your website on CloudFlare, we distribute the content globally in a CDN like fashion.  Security comes in the form of a Web Application Firewall;  CloudFlare is able to filter out "bad" traffic leaving you with a more secure website.

Our network is a global anycast network.  We announce several global /24s which serve CDN traffic.  We determine the scope of routes to send you based upon your network's scope and footprint in relation to our point of interconnect.

We request max-prefix sizes of 500 for IPv4 and 100 for IPv6.