Apex domains cannot have CNAME records.
Question and response
Question
dig encircalabs.com. NS
Answer
encircalabs.com. 5 NS ns-522.awsdns-01.net.
encircalabs.com. 5 NS ns-1620.awsdns-10.co.uk.
encircalabs.com. 5 NS ns-455.awsdns-56.com.
encircalabs.com. 5 NS ns-1230.awsdns-25.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0