Apex domains cannot have CNAME records.
Question and response
Question
dig ucom.am. NS
Answer
ucom.am. 5 NS ns.ucom.am.
ucom.am. 5 NS ns2.ucom.am.
Authority
The response has no authority records.
Additional
ns.ucom.am. 5 A 92.43.137.12
ns2.ucom.am. 5 A 92.43.138.12
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0