Apex domains cannot have CNAME records.
Question and response
Question
dig e-suez.com. NS
Answer
e-suez.com. 5 NS ns-1863.awsdns-40.co.uk.
e-suez.com. 5 NS ns-295.awsdns-36.com.
e-suez.com. 5 NS ns-230.awsdns-28.com.
e-suez.com. 5 NS ns-1065.awsdns-05.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0