Apex domains cannot have CNAME records.
Question and response
Question
dig as200780.net. NS
Answer
as200780.net. 5 NS ns-164-b.gandi.net.
as200780.net. 5 NS ns-210-a.gandi.net.
as200780.net. 5 NS ns-111-c.gandi.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0