Really? Because it’s impossible to set .com.br domains to put nameservers due to restrictions on the registry. You can host these domains here unfortunately
When you try to point your domain to InfinityFree’s nameservers (ns1.infinityfree.com and ns2.infinityfree.com ), your registrar might refuse the change with error messages like:
DNS Query Refused
ERROR: Answer must be authoritative
The name server is not responsible for this domain
Domain is not activated in the nameservers