Apex domains cannot have CNAME records.
Question and response
Question
dig awsdns-60.org. NS
Answer
awsdns-60.org. 5 NS g-ns-1087.awsdns-60.org.
awsdns-60.org. 5 NS g-ns-1660.awsdns-60.org.
awsdns-60.org. 5 NS g-ns-188.awsdns-60.org.
awsdns-60.org. 5 NS g-ns-766.awsdns-60.org.
Authority
The response has no authority records.
Additional
g-ns-188.awsdns-60.org. 5 A 205.251.192.188
g-ns-766.awsdns-60.org. 5 A 205.251.194.254
g-ns-1087.awsdns-60.org. 5 A 205.251.196.63
g-ns-1660.awsdns-60.org. 5 A 205.251.198.124
g-ns-188.awsdns-60.org. 5 AAAA 2600:9000:5300:bc00:0:0:0:1
g-ns-766.awsdns-60.org. 5 AAAA 2600:9000:5302:fe00:0:0:0:1
g-ns-1087.awsdns-60.org. 5 AAAA 2600:9000:5304:3f00:0:0:0:1
g-ns-1660.awsdns-60.org. 5 AAAA 2600:9000:5306:7c00:0:0:0:1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0