Apex domains cannot have CNAME records.
Question and response
Question
dig hostingww.com. NS
Answer
hostingww.com. 4 NS ns-644.awsdns-16.net.
hostingww.com. 4 NS ns-1814.awsdns-34.co.uk.
hostingww.com. 4 NS ns-147.awsdns-18.com.
hostingww.com. 4 NS ns-1068.awsdns-05.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0