Apex domains cannot have CNAME records.
Question and response
Question
dig nice.com. NS
Answer
nice.com. 4 NS ns-570.awsdns-07.net.
nice.com. 4 NS ns-32.awsdns-04.com.
nice.com. 4 NS ns-1764.awsdns-28.co.uk.
nice.com. 4 NS ns-1209.awsdns-23.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0