ISP blocked due to abuse?

Well, it seems today that I'm now unable to post anything over at the 4chan imageboards, otherwise I get this message:
"Posting from your ISP has been blocked due to abuse. [More Info]"
I can still browse the site, all the images and threads load fine, I just can't post. What gives? I've never posted spam or porn.

guys mods dont care

and if your ip starts from 85 or 79 or whatever they baned it

its simple

either they remove the ip range ban

or we stay here