DNS / ip issues

ok, i figured this place would be my best bet.

short story is, after 4chan came back up, i can no longer access /b/. I can access everything BUT b. /b/ gives me a 404 message.  after screwing around, ive found that i can access /b/ when im off my DMZ, but not when im on it.
I just want to know what is going on. am i ip blocked from /b/ or something? what does my DMZ have to do with getting 404d from only one specific board on 4chan.
Any help is much appreciated, thanks in advance.
 - Gen

update - oh god, now its 404ing me again. what the hell is happening.

kill. your____.

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