Apex domains cannot have CNAME records.
Question and response
Question
dig krescendo.com. NS
Answer
krescendo.com. 5 NS ns-855.awsdns-42.net.
krescendo.com. 5 NS ns-152.awsdns-19.com.
krescendo.com. 5 NS ns-1729.awsdns-24.co.uk.
krescendo.com. 5 NS ns-1311.awsdns-35.org.
krescendo.com. 5 NS ns-1763.awsdns-28.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0