From what I got it's CF who cut access to their services first, and then they notified the host provider so they cut off access as well, presumably because CF presented Iwara as some kind of pedo haven and the host wanted none of that (which I understand, even if people conflating fictional and real content piss me off to no end for a few reasons).
For now it's still unclear whether the host outright deleted everything or just cut access to the server, if it's the latter there's hope nothing has been lost yet. Whatever happens next, let this be a lesson to Iwara to do more regular backups, and to either enforce the tagging system more seriously in the future or to use a community tag system, which works well enough on e-hentai/exhentai.
