Apex domains cannot have CNAME records.
Question and response
Question
dig masriera.com. NS
Answer
masriera.com. 5 NS ns4.cdmondns-01.org.
masriera.com. 5 NS ns5.cdmondns-01.com.
masriera.com. 5 NS ns3.cdmon.net.
masriera.com. 5 NS ns2.cdmon.net.
masriera.com. 5 NS ns1.cdmon.net.
Authority
The response has no authority records.
Additional
ns1.cdmon.net. 5 A 35.189.106.232
ns2.cdmon.net. 5 A 35.195.57.29
ns3.cdmon.net. 5 A 35.157.47.125
ns4.cdmondns-01.org. 5 A 52.58.66.183
ns5.cdmondns-01.com. 5 A 52.59.146.62
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0