It could of been a typo on their part and meant NA/EU. Regardless, here is the same
thing from the "An Apology to Our Players Using
NA/EU Data Centers".
http://forum.square-enix.com/ffxiv/threads/68427
Although we have successfully addressed a number of serious issues in the past several days, we have nevertheless decided to implement login restrictions for the time being
due to the extremely heavy load being placed upon the servers. In this way, we can ensure that the maximum number of players can play the game without risking a server crash. I know no one wants to wait to log in, but I hope you all understand why we believe this precaution is necessary.
FYI, I'm not a dude.