Apex domains cannot have CNAME records.
Question and response
Question
dig awsdns-60.net. NS
Answer
awsdns-60.net. 5 NS g-ns-1404.awsdns-60.net.
awsdns-60.net. 5 NS g-ns-830.awsdns-60.net.
awsdns-60.net. 5 NS g-ns-509.awsdns-60.net.
awsdns-60.net. 5 NS g-ns-1980.awsdns-60.net.
Authority
The response has no authority records.
Additional
g-ns-509.awsdns-60.net. 5 A 205.251.193.253
g-ns-830.awsdns-60.net. 5 A 205.251.195.62
g-ns-1404.awsdns-60.net. 5 A 205.251.197.124
g-ns-1980.awsdns-60.net. 5 A 205.251.199.188
g-ns-509.awsdns-60.net. 5 AAAA 2600:9000:5301:fd00:0:0:0:1
g-ns-830.awsdns-60.net. 5 AAAA 2600:9000:5303:3e00:0:0:0:1
g-ns-1404.awsdns-60.net. 5 AAAA 2600:9000:5305:7c00:0:0:0:1
g-ns-1980.awsdns-60.net. 5 AAAA 2600:9000:5307:bc00:0:0:0:1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0