Apex domains cannot have CNAME records.
Question and response
Question
dig intercleanofgreeley.com. NS
Answer
intercleanofgreeley.com. 4 NS ns2.intercleanofgreeley.com.
intercleanofgreeley.com. 4 NS ns1.intercleanofgreeley.com.
Authority
The response has no authority records.
Additional
ns1.intercleanofgreeley.com. 4 A 144.217.162.99
ns2.intercleanofgreeley.com. 4 A 51.161.91.47
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0