I believe +connect lotn.servegame.org:5121 also still works. It's the one I've been using for ages. Never had any problem with it (unless of course the server really is down).
Sometimes the dedicated server resets some of the settings and the server gets renamed back to "Unnamed Server".
Occasionally, the server might crash (Typical issues to do with maybe a router or the ISP, but it happens to everyone...), and thus might be missing for a couple minutes. It shouldn't take long to reappear. I do know it happened around the time you posted this topic (Twice in a row, actually) but it seems to have resolved itself.