For every connection to the internet, somebody ultimately pays a so-called "Intern Service Provider" (ISP). An ISP is able to send the bill to the billing address of their customer to charge for the usage of the Internet. In the Netherlands, ISPs are required to send a daily list of personal data that belongs to an ip address to a central register. This Centraal Informatiepunt Onderzoek Telecommunicatie (CIOT) makes sure the information is available to investigative bodies, for instance to solve crimes.