Apex domains cannot have CNAME records.
Question and response
Question
dig awsdns-59.com. NS
Answer
awsdns-59.com. 5 NS g-ns-635.awsdns-59.com.
awsdns-59.com. 5 NS g-ns-1211.awsdns-59.com.
awsdns-59.com. 5 NS g-ns-1787.awsdns-59.com.
awsdns-59.com. 5 NS g-ns-60.awsdns-59.com.
Authority
The response has no authority records.
Additional
g-ns-60.awsdns-59.com. 5 A 205.251.192.60
g-ns-635.awsdns-59.com. 5 A 205.251.194.123
g-ns-1211.awsdns-59.com. 5 A 205.251.196.187
g-ns-1787.awsdns-59.com. 5 A 205.251.198.251
g-ns-60.awsdns-59.com. 5 AAAA 2600:9000:5300:3c00:0:0:0:1
g-ns-635.awsdns-59.com. 5 AAAA 2600:9000:5302:7b00:0:0:0:1
g-ns-1211.awsdns-59.com. 5 AAAA 2600:9000:5304:bb00:0:0:0:1
g-ns-1787.awsdns-59.com. 5 AAAA 2600:9000:5306:fb00:0:0:0:1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0