Apex domains cannot have CNAME records.
Question and response
Question
dig websitez.biz. NS
Answer
websitez.biz. 5 NS ns-385.awsdns-48.com.
websitez.biz. 5 NS ns-1657.awsdns-15.co.uk.
websitez.biz. 5 NS ns-199.awsdns-24.com.
websitez.biz. 5 NS ns-1519.awsdns-61.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0