Apex domains cannot have CNAME records.
Question and response
Question
dig har.com. NS
Answer
har.com. 1 NS ns-1987.awsdns-56.co.uk.
har.com. 1 NS ns-229.awsdns-28.com.
har.com. 1 NS ns-612.awsdns-12.net.
har.com. 1 NS ns-1380.awsdns-44.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0