The dark internet it a separate server allowing sites to remain open as they appear to have no IP address. The dark internet is used by file sharing websites therefore they can not be shut down. Unfortunately this also means that pedophile rings can operate and share files within th dark internet.
The dark Internet should not be confused with either deep web or darknet. Whereas deep web and darknet stand for hard-to-find websites and secretive networks that sometimes span across the Internet, the dark Internet is any portion of the Internet that can no longer be accessed through conventional means.
Failures within the allocation of Internet resources due to the Internet's chaotic tendencies of growth and decay are a leading cause of dark address formation. One form of dark address is military sites on the archaic MILNET. These government networks are sometimes as old as the original ARPANET, and have simply not been incorporated into the Internet's evolving architecture.