Apex domains cannot have CNAME records.
Question and response
Question
dig backstopsolutions.com. NS
Answer
backstopsolutions.com. 1 NS ns101.digicertdns.com.
backstopsolutions.com. 1 NS f.ns.buddyns.com.
backstopsolutions.com. 1 NS c.ns.buddyns.com.
backstopsolutions.com. 1 NS ns100.digicertdns.com.
backstopsolutions.com. 1 NS ns102.digicertdns.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0