Apex domains cannot have CNAME records.
Question and response
Question
dig qualitiacloud.com. NS
Answer
qualitiacloud.com. 5 NS ns-1508.awsdns-60.org.
qualitiacloud.com. 5 NS ns-133.awsdns-16.com.
qualitiacloud.com. 5 NS ns-831.awsdns-39.net.
qualitiacloud.com. 5 NS ns-1919.awsdns-47.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0