That can vary widely. You have large ISPs that have automation tools and you have mom-and-pop shops that do things very manually, so the costs can be all over. I'm not in a position to tell you that. There were some studies done previous to the notice and notice regime that tried to put a handle on the cost, at least at that particular time period.
We haven't delved into that issue very much in the last few years because it was taken off the table when the government made the choice not to compensate ISPs for processing notices. Given that no regulation was passed authorizing a fee and at that time the law was stable and the notice and notice regime was stable, we didn't, at least as an association, keep delving into that, but there's probably data out there, and we could follow up with you if you're interested.