CNAME = Canonical Name
It is a type of resource record in the Domain Name System (DNS) that specifies that the domain name is an alias of another, canonical domain name.
Assume you have “www.mydomain.do” domain and want to assign the IP 126.96.36.199 to this address, then you should create an A record with “www.mydomain.do” as the domain name and 188.8.131.52 as the value.
Once you do that all the requests for “www.mydomain.do” will be sent to the server with the IP 184.108.40.206.
Hope this helps someone.