Apex domains cannot have CNAME records.
Question and response
Question
dig pueblosvivos.com. NS
Answer
pueblosvivos.com. 3 NS ns-1119.awsdns-11.org.
pueblosvivos.com. 3 NS ns-49.awsdns-06.com.
pueblosvivos.com. 3 NS ns-1833.awsdns-37.co.uk.
pueblosvivos.com. 3 NS ns-1615.awsdns-09.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0