Apex domains cannot have CNAME records.
Question and response
Question
dig aeropean.info. NS
Answer
aeropean.info. 5 NS ns1.aeropean.info.
aeropean.info. 5 NS ns2.aeropean.info.
Authority
The response has no authority records.
Additional
ns1.aeropean.info. 5 A 170.62.109.86
ns2.aeropean.info. 5 A 185.9.158.51
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0