Apex domains cannot have CNAME records.
Question and response
Question
dig theblind.org. NS
Answer
theblind.org. 1 NS pdns06.domaincontrol.com.
theblind.org. 1 NS pdns05.domaincontrol.com.
Authority
The response has no authority records.
Additional
pdns05.domaincontrol.com. 1 A 97.74.110.52
pdns06.domaincontrol.com. 1 A 173.201.78.52
pdns05.domaincontrol.com. 1 AAAA 2603:5:21e1:0:0:0:0:34
pdns06.domaincontrol.com. 1 AAAA 2603:5:22e1:0:0:0:0:34
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0