Apex domains cannot have CNAME records.
Question and response
Question
dig draintechnologyrd.com. NS
Answer
draintechnologyrd.com. 3 NS tim.ns.cloudflare.com.
draintechnologyrd.com. 3 NS brenna.ns.cloudflare.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0