Apex domains cannot have CNAME records.
Question and response
Question
dig t-net.net.ve. NS
Answer
t-net.net.ve. 5 NS dns2.telcel.net.ve.
t-net.net.ve. 5 NS dns1.telcel.net.ve.
Authority
The response has no authority records.
Additional
dns1.telcel.net.ve. 5 A 200.35.65.3
dns2.telcel.net.ve. 5 A 200.35.65.4
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0