Apex domains cannot have CNAME records.
Question and response
Question
dig can-gumruk.com. NS
Answer
can-gumruk.com. 3 NS ns-1782.awsdns-30.co.uk.
can-gumruk.com. 3 NS ns-1578.awsdns-05.co.uk.
can-gumruk.com. 3 NS ns-184.awsdns-23.com.
can-gumruk.com. 3 NS ns-1170.awsdns-18.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0