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