Apex domains cannot have CNAME records.
Question and response
Question
dig micrusero.com. NS
Answer
micrusero.com. 1 NS ns2.micrusero.com.
micrusero.com. 1 NS ns1.micrusero.com.
Authority
The response has no authority records.
Additional
ns1.micrusero.com. 1 A 149.50.96.18
ns2.micrusero.com. 1 A 149.50.99.129
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0