Apex domains cannot have CNAME records.
Question and response
Question
dig securedsigning.com. NS
Answer
securedsigning.com. 5 NS ns4-08.azure-dns.info.
securedsigning.com. 5 NS ns2-08.azure-dns.net.
securedsigning.com. 5 NS ns1-08.azure-dns.com.
securedsigning.com. 5 NS ns-1127.awsdns-12.org.
securedsigning.com. 5 NS ns-448.awsdns-56.com.
securedsigning.com. 5 NS ns-1016.awsdns-63.net.
securedsigning.com. 5 NS ns3-08.azure-dns.org.
securedsigning.com. 5 NS ns-2038.awsdns-62.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0