Apex domains cannot have CNAME records.
Question and response
Question
dig powerinrussia.com. NS
Answer
powerinrussia.com. 5 NS ns-1866.awsdns-41.co.uk.
powerinrussia.com. 5 NS ns-174.awsdns-21.com.
powerinrussia.com. 5 NS ns-121.awsdns-15.com.
powerinrussia.com. 5 NS ns-1413.awsdns-48.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0