Or am I just being blocked out by my country's IP?
Logging on to multiplayer for the first time in several months, just an hour ago (living over here in South Korea), and I see only two servers with no one playing.
Hmmm I haven't seen South Korean servers for quite a long time, though I admit I don't look for them, if I am getting 1000 ping I wouldn't even look at them.
I am sorry that I can't be of much help. Game is certainly alive in UK, Europe, Russia, USA, Australia and I think Japan.
There are IU; korean pc server still alive but no one play in it. You might need to manually filter through all the populated region in server browser filter to see alive servers correctly. or in some cases, just typing in server name is much faster. (you can try KOR also.)
Some of fragnetics servers , DDD, any nfo servers are some of my suggestions for low to decent ping.