Well it appears that of the first wave of PlayStation Network being brought up according to the PlayStation Network Blog. You can scope the map here: http://blog.us.playstation.com/2011/05/14/play-on-%E2%80%93-psn-restoration-begins-now/
PSN faithful rejoice! I wont get to my PlayStation for another 24 hours. What sort of an experience arduous having with the restored service? Hit me up on twitter and let me know.