Apex domains cannot have CNAME records.
Question and response
Question
dig awsdns-14.org. NS
Answer
awsdns-14.org. 5 NS g-ns-1614.awsdns-14.org.
awsdns-14.org. 5 NS g-ns-1041.awsdns-14.org.
awsdns-14.org. 5 NS g-ns-142.awsdns-14.org.
awsdns-14.org. 5 NS g-ns-720.awsdns-14.org.
Authority
The response has no authority records.
Additional
g-ns-142.awsdns-14.org. 5 A 205.251.192.142
g-ns-720.awsdns-14.org. 5 A 205.251.194.208
g-ns-1041.awsdns-14.org. 5 A 205.251.196.17
g-ns-1614.awsdns-14.org. 5 A 205.251.198.78
g-ns-142.awsdns-14.org. 5 AAAA 2600:9000:5300:8e00:0:0:0:1
g-ns-720.awsdns-14.org. 5 AAAA 2600:9000:5302:d000:0:0:0:1
g-ns-1041.awsdns-14.org. 5 AAAA 2600:9000:5304:1100:0:0:0:1
g-ns-1614.awsdns-14.org. 5 AAAA 2600:9000:5306:4e00:0:0:0:1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0