Apex domains cannot have CNAME records.
Question and response
Question
dig nameweb.biz. NS
Answer
nameweb.biz. 5 NS dns1.cloudns.net.
nameweb.biz. 5 NS ns.nscluster.us.
nameweb.biz. 5 NS anycast1.dnsres.net.
nameweb.biz. 5 NS anycast2.dnsres.net.
nameweb.biz. 5 NS ns.nscluster.uk.
nameweb.biz. 5 NS dns2.cloudns.net.
Authority
The response has no authority records.
Additional
ns.nscluster.uk. 5 A 13.248.156.209
ns.nscluster.us. 5 A 198.251.86.156
dns2.cloudns.net. 5 A 185.136.97.77
anycast1.dnsres.net. 5 A 193.227.117.227
anycast2.dnsres.net. 5 A 194.50.187.227
ns.nscluster.uk. 5 AAAA 2600:9000:a51d:1c55:a63e:443d:ec03:df01
ns.nscluster.us. 5 AAAA 2605:6400:10:5c1:84ee:85fb:b2b:8b37
dns2.cloudns.net. 5 AAAA 2a06:fb00:1:0:0:0:2:77
anycast1.dnsres.net. 5 AAAA 2a04:2b00:14cc:0:0:0:0:227
anycast2.dnsres.net. 5 AAAA 2a04:2b00:14dd:0:0:0:0:227
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0