Apex domains cannot have CNAME records.
Question and response
Question
dig foxycart.com. NS
Answer
foxycart.com. 2 NS ns-733.awsdns-27.net.
foxycart.com. 2 NS ns-1803.awsdns-33.co.uk.
foxycart.com. 2 NS ns-304.awsdns-38.com.
foxycart.com. 2 NS ns-1351.awsdns-40.org.
Authority
The response has no authority records.
Additional
ns-733.awsdns-27.net. 2 A 205.251.194.221
ns-1351.awsdns-40.org. 2 A 205.251.197.71
ns-1803.awsdns-33.co.uk. 2 A 205.251.199.11
ns-304.awsdns-38.com. 2 AAAA 2600:9000:5301:3000:0:0:0:1
ns-733.awsdns-27.net. 2 AAAA 2600:9000:5302:dd00:0:0:0:1
ns-1351.awsdns-40.org. 2 AAAA 2600:9000:5305:4700:0:0:0:1
ns-1803.awsdns-33.co.uk. 2 AAAA 2600:9000:5307:b00:0:0:0:1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0