Apex domains cannot have CNAME records.
Question and response
Question
dig ad-vatange.wiki. NS
Answer
ad-vatange.wiki. 5 NS ns-1995.awsdns-57.co.uk.
ad-vatange.wiki. 5 NS ns-524.awsdns-01.net.
ad-vatange.wiki. 5 NS ns-816.awsdns-38.net.
ad-vatange.wiki. 5 NS ns-889.awsdns-47.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0