According to 4chan, they have been "explicitly blocked" by the Verizon wireless network.
Why would Verizon choose to block the site now? Does this put Verizon on par with foreign ISPs that block torrent sites and social networks? Or is there more to the story? The incident calls to mind AT&T's temporary blocking of the site in July 2009. Eventually, AT&T said the block was due to a DDoS originating from 4chan IP addresses.
Verizon Wireless spokesman, Jeffrey Nelson, said two of 4Chan's related sites (not its main one) were sources of malicious attacks, which threatened the wireless network. He said the company didn't block the site but was addressing the security concerns. He said both sites should be accessible to users by the end of the day.
