Apex domains cannot have CNAME records.
Question and response
Question
dig nice-incontact.com. NS
Answer
nice-incontact.com. 5 NS ns-712.awsdns-25.net.
nice-incontact.com. 5 NS ns-1398.awsdns-46.org.
nice-incontact.com. 5 NS ns-1773.awsdns-29.co.uk.
nice-incontact.com. 5 NS ns-250.awsdns-31.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0