SWIP is the Shared Whois Project. It consists of a database showing the ownership of subnets of the Internet. ARDC does not list its allocated subnets in the SWIP database because listing of a subnet in that database implies that the entity listed has ownership of the subnet, and ARDC does not relinquish nor assign ownership of its subnets. Rather, allocations take the form of a limited-term no-cost lease of the subnet address space, with ARDC retaining full ownership. This is done primarily to prevent allocated subnets from being sold.