Apex domains cannot have CNAME records.
Question and response
Question
dig carglob.com. NS
Answer
carglob.com. 5 NS ns-1637.awsdns-12.co.uk.
carglob.com. 5 NS ns-711.awsdns-24.net.
carglob.com. 5 NS ns-328.awsdns-41.com.
carglob.com. 5 NS ns-1153.awsdns-16.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0