Complex sentence: Access to the proxy server and/or DNS server is usually for a subscription fee with various companies advertising'smart DNS' services to allow access to websites and services that restrict digital media content available to be streamed or downloaded by region.
Split into simpler sentences: Access to the proxy and DNS servers is typically available for a subscription fee with companies advertising'smart DNS' services. These services grant access to websites and services that restrict digital media content available to be streamed or downloaded by region.