I GUESS I INADVERTENTLY LIED!
Shit's still all fucked up.
See below for what is wrong.

In short, Tekkit has had a known problem with port recognition and now we are experiencing this joy. Sorry for the downtime, we are working on fixing it but we don't have an estimate on when the server will be back up. Just hang tight and periodically check if you can connect, probably in 12 hour intervals.