Apex domains cannot have CNAME records.
Question and response
Question
dig ciweo.net. NS
Answer
ciweo.net. 5 NS ns2.ciweo.net.
ciweo.net. 5 NS ns1.ciweo.net.
Authority
The response has no authority records.
Additional
ns1.ciweo.net. 5 A 107.6.148.2
ns2.ciweo.net. 5 A 192.210.179.109
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0