Apex domains cannot have CNAME records.
Question and response
Question
dig awsdns-59.net. NS
Answer
awsdns-59.net. 5 NS g-ns-1403.awsdns-59.net.
awsdns-59.net. 5 NS g-ns-508.awsdns-59.net.
awsdns-59.net. 5 NS g-ns-829.awsdns-59.net.
awsdns-59.net. 5 NS g-ns-1979.awsdns-59.net.
Authority
The response has no authority records.
Additional
g-ns-508.awsdns-59.net. 5 A 205.251.193.252
g-ns-829.awsdns-59.net. 5 A 205.251.195.61
g-ns-1403.awsdns-59.net. 5 A 205.251.197.123
g-ns-1979.awsdns-59.net. 5 A 205.251.199.187
g-ns-508.awsdns-59.net. 5 AAAA 2600:9000:5301:fc00:0:0:0:1
g-ns-829.awsdns-59.net. 5 AAAA 2600:9000:5303:3d00:0:0:0:1
g-ns-1403.awsdns-59.net. 5 AAAA 2600:9000:5305:7b00:0:0:0:1
g-ns-1979.awsdns-59.net. 5 AAAA 2600:9000:5307:bb00:0:0:0:1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0