Apex domains cannot have CNAME records.
Question and response
Question
dig outscale.net. NS
Answer
outscale.net. 4 NS ns-247-b.gandi.net.
outscale.net. 4 NS ns-151-a.gandi.net.
outscale.net. 4 NS ns-10-c.gandi.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0