Apex domains cannot have CNAME records.
Question and response
Question
dig sodomains.com. NS
Answer
sodomains.com. 5 NS cris.ns.cloudflare.com.
sodomains.com. 5 NS frida.ns.cloudflare.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0