Checking domain if using CloudFlare

To ensure that CloudFlare was properly installed, enable CloudFlare for three test websites from your control panel.

To check if a website is on CloudFlare, use Terminal. Open Terminal, and enter the following dig command:

dig www.hostforweb.com

Output without CloudFlare-enabled:

;; ANSWER SECTION:

www.hostforweb.com.         9212    IN      A       204.93.210.100

Output with CloudFlare-enabled:

;; ANSWER SECTION:

www.hostforweb.com.     1313    IN      CNAME   www.hostforweb.com.cdn.cloudflare.net.

www.hostforweb.com.cdn.cloudflare.net. 513 IN CNAME

cf-protected-www.hostforweb.com.cdn.cloudflare.net.

cf-protected-www.hostforweb.com.cdn.cloudflare.net. 213 IN A 173.245.61.122

cf-protected-www.hostforweb.com.cdn.cloudflare.net. 213 IN A 199.27.135.44

If you see '.cdn.cloudflare.net', then CloudFlare is enabled.