It looks like the websites are back up, but the games, as well as logging in at the sites, is still not working.
Well, except a lot of event/notice/update pages.
EDIT: From their Facebook page:
Well, except a lot of event/notice/update pages.

EDIT: From their Facebook page:
Nexon Wrote:We are continuing to experience some latency issues in our game. In an effort to resolve this matter fully, we are reentering maintenance. This process is estimated to take around 2 hours and should be concluded by 7 PM Pacific. We will continue to update you as information becomes available. We apologize for this inconvenience and thank you for your understanding. -The Nexon Team -

