Click Select Location, you can see all servers you can choose.
Usually, we suggest you use "The Fastest Server" if you don’t need a certain IP address.
Generally speaking, servers named after a country indicate that it has a corresponding IP address.
For instance, if you want to browse the UK websites, and you are in the US, then choose the UK server or servers under the UK list.
Servers under the streaming menu are for streams or sites which need specific IP. They have more accurate IP addresses than recommended servers.