We bought clickhouse.com from the previous owner 2.5 years ago, who used it for some ad network - it was in some block lists, but I hope we managed to clean up most of them.
I'm not sure that list should be used any more. I tracked down a pihole issue a while ago to find this "The list you referenced was used in our legacy products. It is not maintained, has not been updated, and is not actively distributed us."