Apex domains cannot have CNAME records.
Question and response
Question
dig awsdns-24.org. NS
Answer
awsdns-24.org. 5 NS g-ns-730.awsdns-24.org.
awsdns-24.org. 5 NS g-ns-1051.awsdns-24.org.
awsdns-24.org. 5 NS g-ns-1624.awsdns-24.org.
awsdns-24.org. 5 NS g-ns-152.awsdns-24.org.
Authority
The response has no authority records.
Additional
g-ns-152.awsdns-24.org. 5 A 205.251.192.152
g-ns-730.awsdns-24.org. 5 A 205.251.194.218
g-ns-1051.awsdns-24.org. 5 A 205.251.196.27
g-ns-1624.awsdns-24.org. 5 A 205.251.198.88
g-ns-152.awsdns-24.org. 5 AAAA 2600:9000:5300:9800:0:0:0:1
g-ns-730.awsdns-24.org. 5 AAAA 2600:9000:5302:da00:0:0:0:1
g-ns-1051.awsdns-24.org. 5 AAAA 2600:9000:5304:1b00:0:0:0:1
g-ns-1624.awsdns-24.org. 5 AAAA 2600:9000:5306:5800:0:0:0:1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0