No it's not I don't think you know much about hosting/servers so just going to explain the basics. Each Minecraft server is hosted either at A) A computer (small personal servers) or B) A data centre. People who run dedicated big servers like this have to have data centres to keep the server running 24/7. Data centres are owned by hosts, like Limestone and Staminus. Depending on the distance from you and the data centre, and the strength and size of the host, you may have varying connections to different servers.