Conquest of the Horde

I was simply playing CoTH with no care in the world while suddenly my internet 'hiccuped', in a way. By that I mean it simply restart itself really quickly.

Now of course it DC'd me from the server but now I simply cannot log back in no matter what.

Things i've tried:
Flush DNS cache.
Clear WoW cache.
Use the Repair.exe tool. (I dunno, seemed worth a shot.)
Restart my modem.
Restarted my computer.

Any help would be greatly appreciated!

Right, screenshots:
It gets stuck on Connecting for quite a while before it shows me this error:

How long did you try to connect? You posted this right about the time I was restarting the server.

It was about twenty minutes before you restarted the server.
I thought the restart would help but it didn't really...

Try temporarily changing the realmlist to coth.game-host.org

Doesn't work... Seem to remain with the same error after clearing the cache and changing the realmlist to that.

This just in: I can't connect to the minecraft server. Whatever the problem is it seems to be blocking all connection other that the actual site to CoTH.

Is there a way of unblocking the connection without having to call my ISP, by any chance?