Apex domains cannot have CNAME records.
Question and response
Question
dig awsdns-62.net. NS
Answer
awsdns-62.net. 5 NS g-ns-192.awsdns-62.net.
awsdns-62.net. 5 NS g-ns-1982.awsdns-62.net.
awsdns-62.net. 5 NS g-ns-1406.awsdns-62.net.
awsdns-62.net. 5 NS g-ns-513.awsdns-62.net.
Authority
The response has no authority records.
Additional
g-ns-192.awsdns-62.net. 5 A 205.251.192.192
g-ns-513.awsdns-62.net. 5 A 205.251.194.1
g-ns-1406.awsdns-62.net. 5 A 205.251.197.126
g-ns-1982.awsdns-62.net. 5 A 205.251.199.190
g-ns-192.awsdns-62.net. 5 AAAA 2600:9000:5300:c000:0:0:0:1
g-ns-513.awsdns-62.net. 5 AAAA 2600:9000:5302:100:0:0:0:1
g-ns-1406.awsdns-62.net. 5 AAAA 2600:9000:5305:7e00:0:0:0:1
g-ns-1982.awsdns-62.net. 5 AAAA 2600:9000:5307:be00:0:0:0:1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0