Apex domains cannot have CNAME records.
Question and response
Question
dig cloudhfc.com. NS
Answer
cloudhfc.com. 4 NS ns-dns03.webhostcluster.com.
cloudhfc.com. 4 NS ns-dns02.webhostcluster.com.
cloudhfc.com. 4 NS ns-dns01.webhostcluster.com.
cloudhfc.com. 4 NS ns-dns04.webhostcluster.com.
Authority
The response has no authority records.
Additional
ns-dns01.webhostcluster.com. 4 A 185.136.96.99
ns-dns02.webhostcluster.com. 4 A 185.136.97.99
ns-dns03.webhostcluster.com. 4 A 185.136.98.99
ns-dns04.webhostcluster.com. 4 A 185.136.99.99
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0