Also possible to verify using OpenSSL commandline: openssl s_client -connect 165.225.128.15:443 -showcerts \ -servername www.cloudflarec

Also possible to verify using OpenSSL commandline: openssl s_client -connect 165.225.128.15:443 -showcerts \ -servername www.cloudflarechallenge.com (Though to fully check, you need to compare certificates with the one off the real site, and ensure that his blog appears upon an HTTP request - to exclude proxying.)