Apex domains cannot have CNAME records.
Question and response
Question
dig nfinitcloud.com. NS
Answer
nfinitcloud.com. 2 NS ns2.americanis.net.
nfinitcloud.com. 2 NS ns1.americanis.net.
Authority
The response has no authority records.
Additional
ns1.americanis.net. 1 A 206.251.228.34
ns2.americanis.net. 1 A 209.112.244.34
ns1.americanis.net. 1 AAAA 2600:4401:53:a:0:0:0:100
ns2.americanis.net. 1 AAAA 2600:4402:53:a:0:0:0:100
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0