“Onionland” is a term used to describe the dark web in general. It is also the name of a prominent site that acts as a major search repository for finding items on the dark web. Web crawlers that build the indexes used by conventional search sites do not crawl the dark web. Onionland’s listings are created manually.

The name Onionland, and its use as a synonym for the dark web, comes from Onion Routing which is a protocol used to anonymize data packets via multi-layered encryption. Unpacking these layers of encryption is likened to peeling an onion. TOR is the most well-known implementation of onion routing used on the Dark Web. TOR is an acronym of The Onion Router.

See Onion Routing, What Is Cybersecurity?, What is the Dark Web? and TOR (The Onion Router).