Depends on the sub-reddit. Some are blocked, some aren't. Not controlled by your local CS.
Again, it's not blocked at your CS. I haven't tried to login in awhile, so I forget at what level they're blocking it (regional, AF, DISA). I'm guessing regional, but if anyone on the west coast is having issues, please speak up and that'll indicate higher.
I'm glad we're talking about this rather than having to listen to the gray-hairs complain about youtube and facebook while they spend all day on espn updating their fantasy-sport game that's totally cooler and more real than video games or D&D.