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