Apex domains cannot have CNAME records.
Question and response
Question
dig scorpion.w3connect.com.br. NS
Answer
scorpion.w3connect.com.br. 5 NS ns1.w3connect.com.br.
scorpion.w3connect.com.br. 5 NS ns2.w3connect.com.br.
Authority
The response has no authority records.
Additional
ns1.w3connect.com.br. 5 A 51.222.47.120
ns2.w3connect.com.br. 5 A 192.99.172.137
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0