Apex domains cannot have CNAME records.
Question and response
Question
dig reddotnet.us. NS
Answer
reddotnet.us. 4 NS ns-1302.awsdns-34.org.
reddotnet.us. 4 NS ns-1889.awsdns-44.co.uk.
reddotnet.us. 4 NS ns-316.awsdns-39.com.
reddotnet.us. 4 NS ns-824.awsdns-39.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0