Apex domains cannot have CNAME records.
Question and response
Question
dig inocweb.com. NS
Answer
inocweb.com. 5 NS ns1.inoc.net.
inocweb.com. 5 NS ns0.inoc.net.
inocweb.com. 5 NS ns2.inoc.net.
Authority
The response has no authority records.
Additional
ns0.inoc.net. 5 A 64.246.141.34
ns1.inoc.net. 5 A 199.233.228.34
ns2.inoc.net. 5 A 199.48.133.234
ns0.inoc.net. 5 AAAA 2607:f058:203:0:0:0:0:a
ns1.inoc.net. 5 AAAA 2607:fc50:1:500:0:0:0:a
ns2.inoc.net. 5 AAAA 2607:fc50:1000:8a00:0:0:0:a
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0