Apex domains cannot have CNAME records.
Question and response
Question
dig collegiatemugs.com. NS
Answer
collegiatemugs.com. 5 NS ns-694.awsdns-22.net.
collegiatemugs.com. 5 NS ns-1308.awsdns-35.org.
collegiatemugs.com. 5 NS ns-187.awsdns-23.com.
collegiatemugs.com. 5 NS ns-1305.awsdns-35.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0