Apex domains cannot have CNAME records.
Question and response
Question
dig audodrive.com. NS
Answer
audodrive.com. 4 NS ns-1552.awsdns-02.co.uk.
audodrive.com. 4 NS ns-772.awsdns-32.net.
audodrive.com. 4 NS ns-377.awsdns-47.com.
audodrive.com. 4 NS ns-1924.awsdns-48.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0