Apex domains cannot have CNAME records.
Question and response
Question
dig intnet.ne. NS
Answer
intnet.ne. 5 NS ns.intnet.ne.
intnet.ne. 5 NS ne.cctld.authdns.ripe.net.
intnet.ne. 5 NS bow.rain.fr.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0