Apex domains cannot have CNAME records.
Question and response
Question
dig odoo.com. NS
Answer
odoo.com. 5 NS ns2.odoo.com.
odoo.com. 5 NS ns0.odoo.com.
odoo.com. 5 NS ns1.odoo.com.
odoo.com. 5 NS ns3.odoo.com.
Authority
The response has no authority records.
Additional
ns0.odoo.com. 5 A 178.32.109.180
ns1.odoo.com. 5 A 51.91.164.65
ns2.odoo.com. 5 A 35.205.186.208
ns3.odoo.com. 5 A 35.205.106.18
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0