Apex domains cannot have CNAME records.
Question and response
Question
dig tigomoney.com.bo. NS
Answer
tigomoney.com.bo. 4 NS infdns02.tigo.net.bo.
tigomoney.com.bo. 4 NS infdns01.tigo.net.bo.
tigomoney.com.bo. 4 NS dns1.wimaxtigo.bo.
tigomoney.com.bo. 4 NS dns2.wimaxtigo.bo.
Authority
The response has no authority records.
Additional
dns1.wimaxtigo.bo. 4 A 200.73.97.94
dns2.wimaxtigo.bo. 4 A 190.104.14.94
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0