Apex domains cannot have CNAME records.
Question and response
Question
dig eduflickers.com. NS
Answer
eduflickers.com. 4 NS ns1.eduflickers.com.
eduflickers.com. 4 NS ns2.eduflickers.com.
Authority
The response has no authority records.
Additional
ns1.eduflickers.com. 4 A 54.37.82.2
ns2.eduflickers.com. 4 A 5.135.31.107
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0