Anybody can run a server if they wish to. As far as I can tell it's simply a TDM server with modified sniper rifles, and is being hosted by The_Horny_Rat (aka Defender).
I am paying for it, but their donation system makes it easy for people to donate. https://www.nfoservers.com/
My server
Price 19.99, per month
Running windows server 2008 R2
Two full, dedicated HT CPU cores (Nehalem or better)