Apex domains cannot have CNAME records.
Question and response
Question
dig suocrm.com. NS
Answer
suocrm.com. 3 NS dns1.cscdns.net.
suocrm.com. 3 NS dns2.cscdns.net.
Authority
The response has no authority records.
Additional
dns1.cscdns.net. 2 A 156.154.130.100
dns2.cscdns.net. 2 A 156.154.131.100
dns1.cscdns.net. 2 AAAA 2610:a1:1022:0:0:0:0:100
dns2.cscdns.net. 2 AAAA 2610:a1:1023:0:0:0:0:100
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0