Apex domains cannot have CNAME records.
Question and response
Question
dig yadera.com. NS
Answer
yadera.com. 5 NS ns-1895.awsdns-44.co.uk.
yadera.com. 5 NS ns-962.awsdns-56.net.
yadera.com. 5 NS ns-464.awsdns-58.com.
yadera.com. 5 NS ns-1530.awsdns-63.org.
Authority
The response has no authority records.
Additional
ns-962.awsdns-56.net. 4 A 205.251.195.194
ns-1530.awsdns-63.org. 4 A 205.251.197.250
ns-1895.awsdns-44.co.uk. 4 A 205.251.199.103
ns-464.awsdns-58.com. 4 AAAA 2600:9000:5301:d000:0:0:0:1
ns-962.awsdns-56.net. 4 AAAA 2600:9000:5303:c200:0:0:0:1
ns-1530.awsdns-63.org. 4 AAAA 2600:9000:5305:fa00:0:0:0:1
ns-1895.awsdns-44.co.uk. 4 AAAA 2600:9000:5307:6700:0:0:0:1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0