Apex domains cannot have CNAME records.
Question and response
Question
dig agilitypr.delivery. NS
Answer
agilitypr.delivery. 5 NS ns-276.awsdns-34.com.
agilitypr.delivery. 5 NS ns-1278.awsdns-31.org.
agilitypr.delivery. 5 NS ns-552.awsdns-05.net.
agilitypr.delivery. 5 NS ns-2029.awsdns-61.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0