Apex domains cannot have CNAME records.
Question and response
Question
dig edu.ve. NS
Answer
edu.ve. 5 NS ns5.nic.ve.
edu.ve. 5 NS ns6.nic.ve.
edu.ve. 5 NS ssdns-tld.nic.cl.
edu.ve. 5 NS a.lactld.org.
edu.ve. 5 NS ns4.nic.ve.
edu.ve. 5 NS ns3.nic.ve.
Authority
The response has no authority records.
Additional
a.lactld.org. 4 A 200.0.68.10
a.lactld.org. 4 AAAA 2801:14:a000:0:0:0:0:10
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0