1485
Welp that answers a lot of why all .ml are down
(i.imgur.com)
This is a most excellent place for technology news and articles.
Because DNS is the user-facing part of the whole system. There is plenty of trouble with everything else, but you usually don't see that as a user. Also it's a hierarchical system with big providers/governments giving and taking names as they see fit, so there is always the possibility to get screwed.