UPDATE: The bug preventing non-Russian players from logging in has been tracked down and squashed. The community team is reporting that players should no long have issues on log in.
GameNet community managers have taken to the Russian Black Desert Online forums to let users know that the team is aware of an issue where international players are unable to log into the game. The team is aware of the issue and has said that IP blocks are not in place and that the technical team is working to solve the issue.
The most recent GameNet post by [CM]xRiply says, "Friends, currently we have issues with logging in. The technical specialists are looking for the cause of these difficulties. We will announce it when the solution is made."
The free-to-play open beta for BDO launched earlier this week in Russia.
We'll keep you posted as the story develops.