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