Comment by the_common_man
8 years ago
$ host -t NS digitalocean.com
digitalocean.com name server walt.ns.cloudflare.com.
digitalocean.com name server kim.ns.cloudflare.com.
8 years ago
$ host -t NS digitalocean.com
digitalocean.com name server walt.ns.cloudflare.com.
digitalocean.com name server kim.ns.cloudflare.com.
That may not necessarily work. Example:
But if you check the response headers you'll see 'CF-RAY:...' and 'Server: cloudflare-nginx'