Apex domains cannot have CNAME records.
Question and response
Question
dig awsdns-59.org. NS
Answer
awsdns-59.org. 5 NS g-ns-187.awsdns-59.org.
awsdns-59.org. 5 NS g-ns-765.awsdns-59.org.
awsdns-59.org. 5 NS g-ns-1086.awsdns-59.org.
awsdns-59.org. 5 NS g-ns-1659.awsdns-59.org.
Authority
The response has no authority records.
Additional
g-ns-187.awsdns-59.org. 5 A 205.251.192.187
g-ns-765.awsdns-59.org. 5 A 205.251.194.253
g-ns-1086.awsdns-59.org. 5 A 205.251.196.62
g-ns-1659.awsdns-59.org. 5 A 205.251.198.123
g-ns-187.awsdns-59.org. 5 AAAA 2600:9000:5300:bb00:0:0:0:1
g-ns-765.awsdns-59.org. 5 AAAA 2600:9000:5302:fd00:0:0:0:1
g-ns-1086.awsdns-59.org. 5 AAAA 2600:9000:5304:3e00:0:0:0:1
g-ns-1659.awsdns-59.org. 5 AAAA 2600:9000:5306:7b00:0:0:0:1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0