$ host -t NS okcupid.com
okcupid.com name server nameserver2.okcupid.com.
okcupid.com name server nameserver1.okcupid.com.
But if you check the response headers you'll see 'CF-RAY:...' and 'Server: cloudflare-nginx' $ curl -I okcupid.com
Set-Cookie: __cfduid=...
Server: cloudflare-nginx
CF-RAY: 335f033b77742b76-AMS
EDIT:
Better yet, make that 'curl -IL domain.com' to follow redirects because it may not show in the first response.
Operation Ivy Bells https://en.wikipedia.org/wiki/Operation_Ivy_Bells
One of the tapping devices http://i.imgur.com/PgOJSTp.jpg
I believe a few of those devices are on display in some museum in Russia.