Apex domains cannot have CNAME records.
Question and response
Question
dig cldpart.net. NS
Answer
cldpart.net. 5 NS ns32.domaincontrol.com.
cldpart.net. 5 NS ns31.domaincontrol.com.
Authority
The response has no authority records.
Additional
ns31.domaincontrol.com. 2 A 97.74.105.16
ns32.domaincontrol.com. 2 A 173.201.73.16
ns31.domaincontrol.com. 2 AAAA 2603:5:2191:0:0:0:0:10
ns32.domaincontrol.com. 2 AAAA 2603:5:2291:0:0:0:0:10
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0