Apex domains cannot have CNAME records.
Question and response
Question
dig cpanel.net. NS
Answer
cpanel.net. 4 NS hg.cpanel.net.
cpanel.net. 4 NS c.cpanel.net.
cpanel.net. 4 NS mn.cpanel.net.
Authority
The response has no authority records.
Additional
c.cpanel.net. 4 A 208.74.121.52
hg.cpanel.net. 4 A 208.74.121.57
mn.cpanel.net. 4 A 208.74.123.178
c.cpanel.net. 4 AAAA 2620:0:28a4:1528:0:0:0:52
hg.cpanel.net. 4 AAAA 2620:0:28a4:1528:0:0:0:57
mn.cpanel.net. 4 AAAA 2620:0:28a8:4580:0:0:0:178
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0