Quake 3 servers to use?

Since there doesn't seem to be any weekly Quake 3 Arena events going, I might be interested in scheduling some. Issue is... needing a server. I use ioQuake3 I'm not going to open ports to the modern internet for something like that. Is there anyone who has a server or know of a server that could be used for weekly events? I'd like something that runs DM, TDM and/or CTF on classic maps and without a bunch of mods.