Apex domains cannot have CNAME records.
Question and response
Question
dig as39886.net. NS
Answer
as39886.net. 5 NS master-ns1.nomotech.com.
as39886.net. 5 NS master-ns2.nomotech.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0