Yes, you can, but there are some things you need to consider before using one. First, most DNS proxies were butchered in cold blood during Netflix’s war on proxies, and only a handful of them left. Second, a smart DNS proxy is a server that controls any DNS request sent from your device. So, let’s say, if you’ve requested access to Netflix, it will send all your web traffic through the server associated with American Netflix, thus changing both your DNS server and your IP address. This strategy worked for a while until it came under the radar of Netflix, and the following crackdown banned most smart DNS proxy users.
But there are some survivors. For example, ExpressVPN’s Media Streamer is still standing and helping users to access other regions’ libraries. But you need to subscribe to ExpressVPN first to get this feature.