Apex domains cannot have CNAME records.
Question and response
Question
dig subliminalbible.com. NS
Answer
subliminalbible.com. 4 NS ns3.dnsowl.com.
subliminalbible.com. 4 NS ns1.dnsowl.com.
subliminalbible.com. 4 NS ns2.dnsowl.com.
Authority
The response has no authority records.
Additional
ns1.dnsowl.com. 4 A 162.159.26.136
ns1.dnsowl.com. 4 A 162.159.27.173
ns2.dnsowl.com. 4 A 162.159.26.49
ns2.dnsowl.com. 4 A 162.159.27.130
ns3.dnsowl.com. 4 A 162.159.26.234
ns3.dnsowl.com. 4 A 162.159.27.98
ns1.dnsowl.com. 4 AAAA 2400:cb00:2049:1:0:0:a29f:1a88
ns1.dnsowl.com. 4 AAAA 2400:cb00:2049:1:0:0:a29f:1bad
ns2.dnsowl.com. 4 AAAA 2400:cb00:2049:1:0:0:a29f:1a31
ns2.dnsowl.com. 4 AAAA 2400:cb00:2049:1:0:0:a29f:1b82
ns3.dnsowl.com. 4 AAAA 2400:cb00:2049:1:0:0:a29f:1aea
ns3.dnsowl.com. 4 AAAA 2400:cb00:2049:1:0:0:a29f:1b62
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0