My question is, how's that handled in the US? I googled and found WHOIS and ICANN, but is either of these mandatory/required for every website? If I need a character to find out name and address of the owner of a shady website, of the sort that probably wouldn't give it freely, how can I go about that?
Any help would be greatly appreciated. Setting of the fic is, obviously, modern day US; the federal state doesn't matter much if there are differences.