Victor wants to know how the Internet works and who owns it. The Internet is essentially a collection of networks. There's a great book about its foundation called Where Wizards Stay Up Late: The Origins Of The Internet by Katie Hafner. It was a project of DARPA which got computers and networks to talk to each other. So in essence, the Internet is merely a protocol, with individual networks owning each other. The wires between them, however, are owned by ISP companies. But nobody really owns the internet. It's non governmental, and it's changing our world.
ICANN, the Internet Corporation of Assigned Names and Numbers, is the group that assigns addresses. It's like a giant phone book.