Apex domains cannot have CNAME records.
Question and response
Question
dig undeveloped.com. NS
Answer
undeveloped.com. 5 NS cns3.secureserver.net.
undeveloped.com. 5 NS cns4.secureserver.net.
Authority
The response has no authority records.
Additional
cns3.secureserver.net. 2 A 97.74.97.102
cns4.secureserver.net. 2 A 173.201.65.102
cns3.secureserver.net. 2 AAAA 2603:5:2110:0:0:0:0:66
cns4.secureserver.net. 2 AAAA 2603:5:2210:0:0:0:0:66
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0