Apex domains cannot have CNAME records.
Question and response
Question
dig creditopublico.gov.do. NS
Answer
creditopublico.gov.do. 5 NS tess.ns.cloudflare.com.
creditopublico.gov.do. 5 NS carmelo.ns.cloudflare.com.
Authority
The response has no authority records.
Additional
tess.ns.cloudflare.com. 1 A 108.162.192.227
tess.ns.cloudflare.com. 1 A 172.64.32.227
tess.ns.cloudflare.com. 1 A 173.245.58.227
carmelo.ns.cloudflare.com. 1 A 108.162.195.129
carmelo.ns.cloudflare.com. 1 A 162.159.44.129
carmelo.ns.cloudflare.com. 1 A 172.64.35.129
tess.ns.cloudflare.com. 1 AAAA 2606:4700:50:0:0:0:adf5:3ae3
tess.ns.cloudflare.com. 1 AAAA 2803:f800:50:0:0:0:6ca2:c0e3
tess.ns.cloudflare.com. 1 AAAA 2a06:98c1:50:0:0:0:ac40:20e3
carmelo.ns.cloudflare.com. 1 AAAA 2606:4700:58:0:0:0:a29f:2c81
carmelo.ns.cloudflare.com. 1 AAAA 2803:f800:50:0:0:0:6ca2:c381
carmelo.ns.cloudflare.com. 1 AAAA 2a06:98c1:50:0:0:0:ac40:2381
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0