Sure. Happened at .org and exactly how I told it. Police monitored all outgoing connections of all users of a certain provider over three days, waiting for someone to connect to a certain IP. Lead to the catch of the operator of a giant child porn site on the darkweb as well as several of his accomplices.
People complained about the breach of privacy and overreach of government. Not a joke.
Still better off than the people in the countries you coup to install dictators.