Daum has announced that IP blocks will be put in place for the Korean version of Black Desert Online with the release of the North American and European version of the game on March 3rd.
Using Google Translate, the Korean version site notice says:
Enforcement date: March 2016 3rd
Action: Korea Black Desert game can not run for some overseas IP
You can read more at the link above.
Does the IP block affect you? Let us know in the comments.