Apex domains cannot have CNAME records.
Question and response
Question
dig dnsprotect.com. NS
Answer
dnsprotect.com. 3 NS ns2.dnsprotect.com.
dnsprotect.com. 3 NS ns.dnsprotect.com.
Authority
The response has no authority records.
Additional
ns.dnsprotect.com. 3 A 63.247.67.106
ns2.dnsprotect.com. 3 A 198.255.110.58
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0