Apex domains cannot have CNAME records.
Question and response
Question
dig gy-consultancy.com. NS
Answer
gy-consultancy.com. 5 NS ns-1749.awsdns-26.co.uk.
gy-consultancy.com. 5 NS ns-1879.awsdns-42.co.uk.
gy-consultancy.com. 5 NS ns-230.awsdns-28.com.
gy-consultancy.com. 5 NS ns-1216.awsdns-24.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0